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Technical Datasheet
TD 00010E/24/EN/01.13
• Class A accuracy (according to IEC
751 or EN 60751)
• Mineral insulated replaceable insert
• With thermowell, threaded process
connection
• and extension neck
Complete product information:
www.e-direct.us/tst187
Specs at a glance:
• Temperature range:
-50 to +400 °C (-58 to +752 °F)
• Tolerance:
Pt100 Class A
• Immersion length (diameter):
120 / 160 / 250 / 400 mm
(Ø 9 mm)
(4.7” / 6.3” / 9.9” / 15.8”
(Ø 0.35”))
• Response time:
≤ 18 s (T50), ≤ 55 s (T90)
RTD thermometer with screw thread for demanding applications
Omnigrad T TST187
$ 136.00

2. Omnigrad T TST187 2
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Application / Function
Application The Omnigrad T TST187
RTD thermometer range covers a wide
variety of market needs worldwide.
Typical applications can be found in
the chemical and pharmaceutical
industry, pulp and paper, waste water
and food industry. It is widely used in
vessels and pipes where a reasonable
response time is required.
Function The Omnigrad T TST187
RTD thermometer assembly includes a
replaceable inset, in mineral insulated
sheath with a G½” process connection.
The head transmitter (DIN 43729
Form B) is thermal decoupled via a
extension neck. The inset is available
either with flying leads for head
transmitter mounting or with terminal
block.
Installation instructions
Pipe installation:
a) At elbows, against the flow
b) In smaller pipes, leant against
the flow
c) Perpendicular to the flow
a)
b)
c)

3. Omnigrad T TST187 3
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DimensionsTechnical data
Technical data Dimensions (in inches)
Sensor
Sensing element Platinum resistance, 1×Pt100 (100 Ω at 0 °C)
Tolerance Class A acc. to IEC 751: -50 to +250 °C
Class B acc. to IEC 751: 250 to 400 °C
Wiring Four-wire connection
Insulation resistance ≥ 100 MΩ, test voltage 250 V at ambient
temperature
Electrical connection Flying leads or terminal block
Sheath diameter 6 mm (0.24)
Operating
temperature
-50 to +400 °C (-58 to +752 °F)
Stem Mineral insulated cable (MgO)
Response time value T50/18 s; T90/55 s; according to IEC 751, in
moving water at 0.4 m/s
Operating conditions 50 bar at +20 °C (725 PSI at +68 °F)
1 bar at +400 °C (14.5 PSI at +752 °F)
Protecting tube
Shape DIN 43772 form 2 G
Diameter 9 mm (0.36)
Material SS 316Ti/1.4571
Process connection
Shape DIN 43772 form 2 G
Material SS 316Ti/1.4571
Screw thread G ½
Terminal head
Type DIN 43729 form B
Protection class IP 66/68
Electrical connection M20×1.5, cable gland
Material Aluminum, polyester powder coated
4.23
2.76
1.1
3.2
0.6
L5.7
Ø 0.35
0.6
G ½
L = Immersion length
Installation according to operation instructions
Tolerance values
2.5
400
Class B (ºC)
Class A (ºC)
ºC
Ω
350300250200150100500-50-100-150-200
2.0
1.5
1.0
0.5

4. Omnigrad T TST187 4
Application / FunctionOverview Technical data Dimensions
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Price table
Omnigrad T TST187 Order no. Price/pcs. in USD
Terminal Type Immersion Length L 1 to 5 6 to 10 11 to 35
Flying leads 120 mm (4.7) TST187-1A2A 154.00 143.00 136.00
160 mm (6.3) TST187-1A2B 154.00 143.00 136.00
250 mm (9.9) TST187-1A2C 164.00 153.00 144.00
400 mm (15.8) TST187-1A2D 174.00 162.00 153.00
Terminal block 120 mm (4.7) TST187-1A3A 165.00 153.00 145.00
160 mm (6.3) TST187-1A3B 165.00 153.00 145.00
250 mm (9.9) TST187-1A3C 175.00 163.00 154.00
400 mm (15.8) TST187-1A3D 185.00 172.00 163.00
Prices valid until 09.30.2013 in U.S. dollars per unit (not including shipping and applicable sales tax).
See Endress+Hauser, Inc. Terms and Conditions of Sale for shipping, tax, and payment terms.
Complete product information:
www.e-direct.us/tst187
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Electrical connection
red
white
white
red
Terminal block
For direct cable connection
red
red
white
Pt100
white
For mounting of head transmitter
Flying leads

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Contact
E-direct
Endress+Hauser, Inc.
2350 Endress Place
Greenwood, IN 46143
Direct order
Internet www.e-direct.us
by phone 888-EH-DIRECT
(343-4732)
per Fax 317-535-8498
E-Mail e-direct@us.endress.com