Selection of 38 products among
83
HIGH PERFORMANCE DATA LOGGER - SL2100
SL2100
High Performance Data Logger
The SL2100 is a high performance data logger with 16 bit resolution. It has eight channels that can be configured via software to accept mA, mV, low level DC
voltage and thermocouple sensors. Although mains powered, the SL2100 has internal batteries that will last eight hours in the event of a power failure. There is enough internal memory to log 112,000 readings at sample rates from once per second to once per day in one second increments. The SL2100 can be configured to log "off-line" to its own internal memory, or, if connected to a computer, "on-line". Where the data are stored on the hard disk of the computer.
Specifications SL2100
Power Mains convertor - 12-15DC @ 400mA
Battery Back Up Yes
Temperature Range -20°C to +50°C
Inputs
Voltage ±10VDC, ±1VDC, ±100mV, ±50mV
Accuracy - Voltage Input ±0.04% of full scale
Current ±20mA
Accuracy - Current Input ±0.04% of full scale
Thermocouple Types B, E, J, K, N, R, S & T
Accuracy - Thermocouple Input ±0.5°C + 0.04% full scale
Digital Inputs 3
Digital Type Volt free contact or TTL - Switch state or Accumulator Mode
Number of Readings 112,000
Digital Outputs One - Maximum Voltage 20v Maximum Current 100mA
Sample Rate 1 seconds to 24 hours in 1 second steps
Ingress Protection IP50
Software Alarms Yes
Delayed Start No
Stop When Full Yes
Material Extruded Aluminium
Warranty 1 Year
Dimensions (LxWxH) 247mm x 110mm x 36mm
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View the product on signatrol.co.uk
Signatrol Data Logging
TEMPERATURE MEASUREMENT T905 BENCH TOP INSTRUMENT
The T905 Bench Top Instrument for Pt100, thermocouple types J, K, L, N, R, S, T.
* Measuring Range: -200°C to + 1760°C
* Accuracy: +/- 0.1°C
* Resolution: 0.1°C
* RS232 Digital output
* 0-1VDC Analogue output
* Integrated sensor calibration.
T955 Bench Top Instrument
The T955 Bench Top Instrument for Pt100 & thermocouple types J, K, N, L, R, S, T, Humidity & Airflow.
* Measuring Range : -200°C to +1760°C
* 0-100% RH
* 0-40m/s
* Accuracy +/-0.03°C
* +/-1.5& RH
* +/-0.5m/s
* Resolution 0.01°C, 0.1% RH, 0.1m/s
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View the product on barber-insys.co.uk
BARBER Insys
SERIES 33 ELECTRICAL INPUT RECORDER
1, 2 or 3 pen recording and controlling at low cost
Simple installation & maintenance
Short case for shallow compartments
Electrical control options
Combinations of temperature, pressure, and
flow can be specified
Pneumatic control options available
The Series 33 range of recorders and recorder controllers may be used with thermocouple, resistance thermometer element, strain gauge or potentiometric pressure transducer, or any transducer producing a dc current or voltage signal.
Available as a single pen, two pen or three pen model, this potentiometric chart recorder will produce a permanent recorder of the value of the measured variable.
With a two-pen recorder the measuring element for the second pen can be a Bourdon or diaphragm measuring element.
A three-position operations pen can be supplied, provided that no pen lift is required and that no alarms are required on the second system, if fitted.
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View the product on rototherm.co.uk
British Rototherm Co. Ltd, The
SENTINEL PROGRAMMABLE RECORDER CONTROLLERS
1, 2 or 3 pen versions available
User configurable via front panel keypad
Easy-to-use menu-driven software for rapid
configuration and calibration
Universal input accepts thermocouples, RTDs,
Vdc
and mAdc
Large character alphanumeric display panel with
backlight
High accuracy and stability
Microprocessor control of ranging, relays, chart
speed and sensor linearisation
Combinations of temperature, pressure, and flow
can be specified
General Description
The Sentinel range of microprocessor-based circular chart
recorders is available in 1, 2 or 3 channel variants.
Sentinel combines the simplicity and clarity of pen drawn
traces together with the versatility of microprocessor control.
Each channel is equipped with a universal signal input
which is compatible with all industry standard sensors
and signals including thermocouple types J, K, T, E, N, R,
S and B, Pt100 platinum resistance temperature detectors
and 4/20mA
current loops.
Low and high measurement ranges are provided for each
input type, separate range cards are not required. Multi
input versions include optoelectronic isolation of the input
stages to eliminate troublesome installation ground
loops.
Thermocouple and RTD characteristics are fully linearised
by means of software. In addition thermocouple measurements
benefit from automatic cold junction compensation
which uses software correction in conjunction with a stable
platinum resistance detector for cold-junction temperature
sensing.
Alarm relay facilities are comprehensive. Single pen recorders
are equipped with three failsafe single-pole changeover
relays, six relays are standard on the two and three pen
versions. Colour-coded light-emitting diodes show the status
of each relay at a glance. All relay functions are under
software control: set point values and hysteresis levels are
entered directly via the keypad, relay action and channel
assignment are selected from user friendly menus. Relays
may be freely assigned to any recording channel.
The rotation speed of the 240mm diameter chart is microprocessor-
controlled and user programmable. Linear
Sentinel charts are compatible with other recorders in the
Rototherm range.
All Sentinel recorders are housed in a strong steel case with
a moulded door that can be panel or surface mounted. A
gasketed lockable door protects internal components from
harsh industrial environments and offers protection generally
to IP55. A tough acrylic window allows the chart trace,
digital channel readings and alarm status to be viewed
with the recorder’s door closed.
Specifications
INPUTS
Number: 1, 2 or 3
Input Signals: (Standard) Thermocouples K, T, J, N, E, B,
R & S Platinum RTD (Pt100) 3-wire
DC voltage ±2V, +20V
DC current ±2mA, ±20mA
Temperature Ranges: Thermocouples to BS4937 (type B
minimum temp 200°C) RTD to BS1904:1984
High and low measurement ranges for each input
Cold-Junction Compensation: Automatic, using Pt1000
temperature detector and software correction
Linearisation: Automatic software linearisation to
BS4937 (thermocouples) and BS1904: 1984 (RTD)
Input Resistance: T/C: 10 Mohms
±2mA : 200 ohms
±20mA : 20 ohms
±2V, +20V: >1 Mohms
Minimum Span: 5°C (Thermocouples K, J, T, E, N & RTD)
Thermocouple Burn-out: Pull-up or pull-down, link
selectable
RTD Current: 1mA approximately
RTD Lead Resistance: 3-lead connection, compensated
up to 10 ohms maximum per lead
Input Protection: ±50Vdc on signal inputs
Input Isolation: Optoelectronic on 2 and 3 input versions
500Vrms channel-to-channel, 500Vrms channel-to-earth
PERFORMANCE
Accuracy: RTD: Low range (200°C) ±0.8°C
(Ambient 20°C)
T/C: ±0.25% FS
Linear: ±0.2% FS
Temperature Stability: ±0.02% FS/°C
Cold Junction Compensation Stability: ±0.02°C/C°
Linearisation Accuracy:
T/couple Types J, K, T, N, E :±0.1°C -50/200°C, ±1°C max
T/couple Types R & S :±0.2°C -50/200°C, ±1°C max,
T/couple Type B :±1°C max.
RTD :Pt100 Better than ±0.1°C - 200/850°C
Calibration Shift: ±10°C user programmable to eliminate
sensor errors (T/C & RTD)
A to D Convertor: Integrating, 16-bit resolution with
50/60Hz noise rejection
Conversion Rate: 2 per second
Noise Rejection: >120dB common-mode, 60dB normal
mode 50/60Hz
RELAYS
Number: 3 on single pen, 6 on two and three-pen
versions.
Relay Actions: Software selectable from:-
High alarm/Low alarm/Deviation alarm/Control relay
(high)/Control relay (low). Relays de-energise in alarm
state
Assignment: Relays freely assignable to any channel
Hysteresis Level: User programmable 0.0% to 10% of
span
Relay Contacts: SPCO silver alloy
Switched Load: 150W dc, 1660VA ac non-inductive
Switched Current: 6A max
Switched Voltage: 30Vdc, 250Vac
Snubber Network: 22nF +100R
GENERAL
Security: 3-level software lock including password
protection, internal hardware jumper lock, lockable door.
Power Supply: 115V or 230Vac ±10%, switch selectable,
50/60Hz.
Power Requirements:
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View the product on thermocouple.co.uk
Thermocouple Instruments Ltd
SKP370 SCANNING KELVIN PROBE SYSTEM
The Scanning Kelvin Probe (SKP) is a non-contact, non-destructive instrument designed to measure the surface work function difference between conducting, coated, or semi-conducting materials and a
metallic probe. The technique operates using a vibrating capacitance probe, and through a swept backing potential, the work function difference is measured between the scanning probe reference tip and sample surface. The work function can be directly correlated to the surface condition. A unique aspect of the SKP is its ability to make measurements in a humid or gaseous environment.
The principle of operation of the Kelvin Probe is illustrated in Figure 1.
The figure represents three energy level diagrams depicting two metals having a constant separation, work functions and Fermi levels of (f1, E1) and (f2, E2), respectively. The first diagram shows the metals with no electrical contact and differing Fermi levels. When electrical contact is made (middle diagram) the flow of charge allows the Fermi levels to equalize and gives rise to a surface charge. The potential difference, VC, is related to the difference in work function:
-eVC = f1 - f2 (1)
where e is the electron charge. The inclusion of an external backing potential, VB (final diagram), allows for a nulling of the surface charge at a unique point where VB = - VC. This point represents the work function difference between the two materials.
When capacitance is at a minimum, the sample potential, VB is varied automatically to ensure that the null point is always maintained and thus the potential at which nulling occurs equates to the work function difference between the probe and sample. Therefore, the values presented in the analyses are opposite to the actual work function being measured.
Work function can then be used to determine the corrosion potential (Ecorr) at a specific point using the relationship:
Ecorr = Constant + (f1 - f2) (2)
where (f1 - f2) is the measured work function between the probe and the sample. The constant can be determined by measuring the corrosion potential using a conventional reference electrode in an electrolyte. Once the constant is known for a particular sample, Ecorr can be calculated directly from the SKP data without an electrolyte.
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View the product on uniscan.com
Uniscan Instruments
GRAIN MOISTURE METER G-7
Microcontroller based circuit for greater accuracy and reliability
Built-in correction factors for Barley, Coffee, Corn, Flax, Hay, Oats, Rapeseed, Rough rice, Sorghum, Soybeans, Wheat, and
Rye
Built-in temperature correction over the range of 32 - 160° F (0 - 70° C)
Programmable offset to match elevator
Stores up to 150 accumulated readings in user-defined batches by grain
Displays the average and highest readings, and standard deviation and co-efficient of variance of stored readings
Adjustable set point indicator to alert you when a pre-selected %MC has been reached
Connector for an external electrode
Built-in calibration check
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View the product on delmhorst.com
Delmhorst
LOW COST TEMPERATURE DATA LOGGER WITH ALARM OPTION - SL121T
SL121T
Low Cost Temperature Data Logger With Alarm Option
The SL121T is a low cost temperature data logger with audible and visible alarms. The SL121T is self contained, with internal batteries
that last up to 5 years. The data loggers are configured using Signatrol's TempIT software via an infra red reader that takes its power from the COM port on the computer. The data logger can be programmed with a user manifest that can be used to describe the application that the data logger is being used for, vehicle and driver details if used for a transportation application or room details if used in a building management application. Once configured, the data logger is placed in the area or package to be monitored. At the end of the logging period, the data logger is taken back to the computer and the data downloaded. TempIT will then display the readings as a graph against time in the TempIT-Lite package or with an additional data table in the full TempIT package. If the SL121T is used, a green LED is activated when the data logger is logging, changing to red if the preprogrammed alarm levels are exceed giving instant indication that the logger has been subjected to physical conditions outside those set by the operator. There is also an audible alarm function to identify alarms conditions.
The SL121TR is available with a removable external temperature sensor, ideal for use in monitoring the temperature of food products during cooking. This allows the data logger to be use in environments that are unsuitable for the data logger itself. This could be at operating temperature outside the operating limits of the data logger or hygienic applications where the cracks and crevices of the data logger would be a hazard. The SL121TR is ideally suited for HACCP and EFSIS evaluation.
Stored data are extracted simply and easily by placing the data logger face down on the SL120R infra-red reader. Once the data have been extracted, the operator is presented with a graph of temperature against time. This graph can then be printed or saved away before the data logger memory is cleared down and reused.
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View the product on signatrol.co.uk
Signatrol Data Logging
MINIATURE TEMPERATURE & RELATIVE HUMIDITY LOGGERS - SL54TH
SL54TH
Miniature Temperature & Relative Humidity Loggers
The SL54TH is our lowest cost temperature and relative humidity data logger. It is a self contained and self powered with the ability to
record up to 8,000 data points. The SL54TH can operate in a temperature range of -20°C to +85°C and up to 100%RH. They are very small (about the same size as a watch battery) which enables them to be inserted into small items and packages.
The SL50R Button Reader™ interfaces to the RS232 or USB port of a PC and is totally compatible with the user friendly,
TempIT-Lite operating software which enables the logger to be set up and the data read and displayed in graphical format. Data can be stored and retrieved at a later time. The software can be up-graded to TempIT-Pro which provides various additional features such as data table view, export data to spreadsheet, email graphs and automated MKT Calculations etc. The TempIT software also automatically calculates dew point from the measured temperature and relative humidity readings.
Shown next to a UK 20 pence coin Starter kits are available. The Starter kits contain up to five data logging buttons, the communication interface, a single plastic holder and a copy of the TempIT-Pro software, giving additional savings if all items were purchased separately. The SL54TH data loggers, USB interface lead or the starter kit can be purchased online by clicking on the buy now button above.
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View the product on signatrol.co.uk
Signatrol Data Logging
DIGITAL FAULT RECORDING - SHERLOG
Digital Fault Recording
SHERLOG - Energy Network Monitors
In view of the growing number of factors with a disturbing influence on power systems and the ever increasing sensitivity of the devices and
installations on the consumer side, simple monitoring criteria such as undervoltage or overcurrent are usually inadequate nowadays. Reliable logging of all the relevant events within the electrical power system calls for the constant observation of a wide variety of derived parameters such as harmonic content, system unbalance or interharmonics and the swift identification of the slightest deviation from the standard state.
In addition to providing pure monitoring functions, modern power system analysing equipment should be capable of logging in full the mode of operation and the interaction of all the component parts of a power supply system.
Only comprehensive and continuous monitoring of the entire power system enables all resources to be used purposively and effectively for the restoration of system operation should a disturbance occur.
In addition, the recorded data provides the planners of electrical installations and protection equipment with an invaluable basis for the extension and optimisation of primary and secondary equipment.
If you are not already convinced of the importance of using a modern power system monitor, you certainly will be as soon as you are confronted with the question of who is liable for system disturbances and who is responsible for meeting the costs involved.
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View the product on kocos.com
Kocos France
