For Ambient Temperatures
Thermistors are ideal for ambient temperatures as they combine fast response time and accuracy. Range extremes are -50°C to + 150°C. Long cable lengths can be used.
Type U: 2000 ohms at 25°C (accuracy +/-0.1°C over the range 0 to 70°C)
* whichever is larger
Type Names of Materials Useful Range Accuracy J Iron (+)
Constantan (-)95 - 760°C 1.1°C / 0.4% * K Chromel (+)
Alumel (-)95 - 1260°C 1.1°C / 0.4% * T Copper (+)
Constantan (-)-200 - 350°C 0.5°C / 0.4% *
Accurate at High Temperatures
PRTs are best suited for measuring temperatures down to -100°C and up to +600°C with good long term stability and accuracy. Due to the small change in resistance of PRTs, cable resistance can affect the accuracy of the sensor. Three or preferably four wire cables should be used and long lengths should be avoided. Eltek products support only PT100 Platinum Resistance Sensors.
Items marked with a * are available on quick delivery.
Robust, fast response, stainless steel, rounded end probes. Typical applications include air, vapours, liquids, powders, fridges, freezers, food...
| CS* | ||||
|---|---|---|---|---|
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Sensor | Code | Cable Code | Connector |
| Thermistor | U | VL | 0*, 1* | |
| Thermocouple | J, K, T | NL, MT,FG | 0, 1, 3 | |
| Pt100 | P4 (4 Wire) | CA, CB | 0 | |
| Length 125mm, dia. 4.8mm | ||||
| CM* | ||||
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Sensor | Code | Cable Code | Connector |
| Thermistor | U | VS | 0*, 1* | |
| Thermocouple | J, K, T | NL, MT, FG | 0, 1, 3 | |
| Thermocouple | T | NS | 0, 1, 3 | |
| Length 50mm, dia. 3.2mm | ||||
| CMS* | ||||
 |
Sensor | Code | Cable Code | Connector |
| Thermistor | U | VS | 0*, 1* | |
| Thermocouple | J, K, T | NL, MT, MG | 0, 1, 3 | |
| Thermocouple | T | NS | 0, 1, 3 | |
| Length 25mm, dia. 3.2mm | ||||
| CT* | ||||
 |
Sensor | Code | Cable Code | Connector |
| Thermistor | U | VL | 0*, 1* | |
| Thermocouple | J, K, T | NL, FG | 0, 1, 3 | |
| Pt100 | P4 (4 Wire) | CA, CB | 0 | |
| Length 50mm, dia. 4.8mm | ||||
| Exposed Junction Thermocouples | ||||
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Probe Code | Thermocouple | Cable Code | Connector |
| TH-J | CODE J | NL-J | 0, 3 | |
| TH-K | CODE K | NL-K | 0, 3 | |
| TH-T | CODE T | NL-T | 0, 3 | |
| Thermocouple sensor at end of cable (conductors are exposed and welded at tip). Fast response, low cost. See cable information for temperature and length details. | ||||
Sensor mounted on either copper or stainless steel base. Typical applications include radiators, pipes, pumps, motors...
| EU* (copper base) / EUS (st. st. base) | ||||
|---|---|---|---|---|
 |
Sensor | Code | Cable Code | Connector |
| Thermistor | U* | VS, VL | 0*, 1*, 2 | |
| Thermocouple | J, K, T | NL, NS, MT | 0*, 1*, 3 | |
| length 18mm, max width 8.5mm | ||||
Sensor assembly mounted on aluminum bracket. Removeable black plastic globe to allow for the effect of radiant heat. Typical applications include radiant temperature and air temperature measurements.
| AG | ||||
|---|---|---|---|---|
 |
Sensor | Code | Cable Code | Connector |
| Thermistor | U | VL | 0, 1, 2 | |
| Thermocouple | J, K, T | NL | 0, 1, 3 | |
| Globe dia. 36mm | ||||
Stainless steel sheath with pointed end and choice of handle for easy insertion and withdrawal into solid material. Typical applications include frozen food, soil and ice...
| CMP | ||||
|---|---|---|---|---|
 |
Sensor | Code | Cable Code | Connector |
| Thermistor | U | VS | 0, 1, 2 | |
| Thermocouple | T | NS, MT | 0, 1, 3 | |
| length 50mm, dia. 3.2mm (no handle) | ||||
| Soft Insertion Probe | ||||||
|---|---|---|---|---|---|---|
|
Sensor sealed into smooth round ended flexible translucent PVC tubing which is smoothly fused onto cable. For delicate applications requiring flexible soft insertion. Note: this product is not a medical device and is not intended for use with humans or animals. |
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Code | Thermistor Code | Length (mm) | Dia (mm) | Cable Code | Connector |
| REC | U | 100 | 5.0 | VL | 0, 1, 2 | |
| REC (small) | U | 50 | 3.0 | VS | 0, 1, 2 | |
| OES | U | 394 | 5.0 | VL | 0, 1, 2 | |
| Code | Description | Operating range | Maximum dia. (mm) | Maximum length (m) | |
|---|---|---|---|---|---|
| VS | PVC small coaxial, lightweight, water resistant, flexible | -10 to 105 | 2.1 | 10 | 1 |
| VL | PVC large coaxial, general purpose, water resistant, flexible | -10 to 105 | 3.1 | 500 | 2 |
| NL | PTFE flat 2 core, good mechanical strength and flexibility. Resistant to oils, acids, adverse agents and fluids. | -75 to 250 (Intermittently to 300) | 2.3 x 1.3 | 50 | |
| MT | PTFE 2 core (twisted 7/.2), good mechanical strength and flexibility. Resistant to oils, acids, adverse agents and fluids. | -50 to 250 | 2.0 | 15 | |
| FG | High temperature fibreglass, flat pair. | Max 400 | 3.0 | 50 | |
1. Lead length up to 20m can be supplied with thermistor sensors.
2. For platinum resistance types P2 max length is 15m.
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Code 0 | No plug (bare wire tails). |
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Code 3 | Thermoplug (colour coded) 2 pin ISO. T type - Brown K type - Green J type - Black Note: Thermocouple plugs are not included with either Eltek data loggers or GenII GS21/24 or 24H transmitters. |
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Code 4 | Tini QG-3 pin |
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For transmitters |
|
| Code 5 Code 6 Code 7 |
Mini plug 2 way with strain relief (3.4mm pin spacing) Mini plug 4 way with strain relief Mini plug 8 way with strain relief |
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For wired loggers |
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| Code 8 Code 9 Code 10 Code 11 Code 12 Code 13 |
Standard plug 3 way with strain relief (5.3mm pin spacing) Standard plug 4 way with strain relief Standard plug 5 way with strain relief Standard plug 7 way with strain relief Standard plug 8 way with strain relief Standard plug 10 way with strain relief |
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For PT100 Sensors, contact Eltek for advice on connector types.
Note: Eltek can terminate probes with other connectors to mate with the Squirrel when ordered together with the data logger.
Spare probes are supplied only terminated with the connector types identified above.
The temperature probe ordering code is as follows:
EL [Probe]-[Sensor]-[Lead]-[Lead Length]-[Connector]
For example, to order a general purpose CS U Thermistor probe with 3m of PVC large coaxial lead and a 2 way mini plug with strain relief, the order code would be ELCS-U-VL-03-5.
Choose the probe configuration you require from the Probe Types, Cables and Connectors sections and build an order code like the one above. Please ensure the order code is valid, i.e. that the cable type that you may have specified is compatible with the sensor, plug and range that you require.
