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Temperature Transmitter

»Features

»Specifications

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»Model Codes

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EMCO's TEM platinum resistance temperature sensors measure process fluid temperature for most applications. The TEM transmitter uses a resistance temperature device (RTD) to measure process temperature. RTDs operate on the principle that the resistance of the sensing device is proportional to the temperature, producing a highly repeatable and exceptionally stable resistance versus temperature relationship.

The TEM transmitter may be selected with either a direct RTD output or with an industry standard 4 to 20 mA current output. The current output includes a preamplifier that is factory scaled and calibrated to one of several standard temperature ranges in either Fahrenheit or Celsius.

The TEM is a thermowell mounted to allow installation and removal without process shutdown. Several immersion lengths are available to accommodate a wide range of pipe sizes.

Features

RTD or 4 to 20mA current output (linear)
Factory calibrated over selected range
Rugged design
Thermowell included

Performance Specifications
Accuracy (ice point)	RTD sensor	±0.12% (1000 ±1.2 Ω)
Interchangeability	Accuracy	±0.9°F or 0.8% (±0.5°C)
Stability	Better than ±0.45°F (±0.25°C) per year
Sensing element coefficient	0.00385 Ω/Ω/°C
Ambient temperature effect	Zero	0.03 + 0.005% of span per °C
Ambient temperature effect	Span	0.02 + 0.003% of span per °C

Operating Specifications
Temperature ranges	RTD -40 to 800°F (-40 to 426°C)
	Transmitter 10 models ranging from -40 to 500°F (-40 to 260°C)
Ambient temperature limit		-30 to 160°F (-34 to 71°C)
Storage temperature limit		-6 to 185°F (-51 to 85°C)
Ambient humidity limit		0 to 100% relative humidity
Thermowell pressure limit		3500 psig (241 barg) at 1140°F (615°C)
RTD sensor		Output	3-wire RTD
		Current	1 mA recommended, 2 mA max
		Insulation resistance	100 mΩ min at 300 VDC at 75 °F
Optional preamplifier		Output	4 to 20 mA, 2-wire
		Power supply	24 VDC nominal, operable from 12 to 40 VDC
		Load resistance	600 Ω at 24 VDC, dependent on supply voltage

Physical Specifications
Materials	Sensing element	1000 Ω thin-film platinum
	RTD sheath	316 stainless steel
	Junction box	Aluminum
	Thermowell	316 stainless steel
Process connection (Thermowell)		1/2" NPT
Electrical connection		Junction box with terminal block for external wiring, 3/4" NPT female connection for conduit
Weight		3 lb (1.4 kg)

For installation information, contact your local EMCO representative or the factory.

Model Codes
Category	Description	Suffix Codes
Model	Precision RTD with thermowell	TEM-30	-	-	-
Preamplifier (termperature range)	none (RTD only)	-	RTD	-	-
	Preamplifier scaled from 32 to 68°F (liquid or gas)	-	T09	-	-
	Preamplifier scaled from 0 to 250°F (liquid or gas)	-	T10	-	-
	Preamplifier scaled from -40 to 150°F (liquid or gas)	-	T11	-	-
	Preamplifier scaled from 212 to 450°F (liquid or gas)	-	T12	-	-
	Preamplifier scaled from 212 to 500°F (steam)	-	T14	-	-
	Preamplifier scaled from 212 to 900°F (steam)	-	T13	-	-
	Preamplifier scaled from -17.7 to 121.1°C (liquid or gas)	-	T20	-	-
	Preamplifier scaled from -40 to 60°C (liquid or gas)	-	T21	-	-
	Preamplifier scaled from 100 to 204°C (steam)	-	T22	-	-
	Preamplifier scaled from 100 to 260°C (steam)	-	T24	-	-
	Preamplifier scaled from 100 to 426°C (steam)	-	T23	-	-
	Transmitter can be scaled to accommodate special requests and bar scaling	-	TXX	-	-
Thermowell length	2" Thermowell length	-	-	2	-
	3" Thermowell length	-	-	3	-
	4" Thermowell length	-	-	4	-
	6" Thermowell length	-	-	6	-
	8" Thermowell length	-	-	8	-
	10" Thermowell length	-	-	10	-
	12" Thermowell length	-	-	12	-
RTD wires (internal)	Teflon, -4 to 400°F (-40 to 204°C)	-	-	-	T
RTD wires (internal)	Fiberglass, 150 to 800°F (65to 427°C)	-	-	-	F

TEM-30-T13-6-F represents a RTD, the preamplifier is for steam and has a temperature range of 212 to 900°F, the 6” Thermowell has fiberglass wiring.


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	EMCO Flow Systems is a division of Spirax Sarco, Inc. Copyright 2008. All rights reserved.