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WINTERS INSTRUMENTS Tel: 1-800-WINTERS / www.winters.com 73
TRR
Remote Reading Thermometer
Section Code Description Type Section Code
Description Bulb and Capillary
Bulb Dimensions
Bulb
Material
Capillary
Material
Capillary Protection
I
TRR1 Gas Remote Reading
IV
1 6” OAL, 1/2” OD Brass Copper Copper Dbl Braided
TRR2 Gas Direct Reading 2 6” OAL, 1/2” OD 316 SS 316 SS None
TRR3 Vapour Remote Reading 3 6” OAL, 1/2” OD 316 SS 316 SS SS Armour
TRR4 Vapour Direct Reading
V
Capillary Length (ft)
II
Case Type, Connection 05 5ft
1
Bottom connection, back
flange
10 10ft
30 30ft
XX Use 2 digits in 5ft lengths, ie: 35 = 35ft
2 Back connection, front flange
VI
Connection
3 Back connection, back flange 0 None
4
Vari-angle connection, (Direct
reading only)
1 1/2” NPT brass sliding union
III
Dial Size 2 1/2” NPT SS sliding union
25 2.5” (63mm) 3 3/4” NPT brass sliding union
35
3.5” (90mm)
Back connection only
4 3/4” NPT SS sliding union
40 4” (100mm) 5 1/2” NPT brass thermowell
45 4.5” (115mm) 6 1/2” NPT SS thermowell
60 6” (150mm) 7 3/4” NPT brass thermowell
85 8.5” (215mm) 8 3/4” NPT SS thermowell
Specify the code for each section and the range:
e.g. TRR3 - 2 - 35 - 1 - 05 - 1 - 50/250°F
(Section I - II - III - IV - V - VI - range)
Order Codes
Selection Notes
Gas-filled Systems
• For industrial applications requiring accurate and uniform response over the entire range. Scale is linear
• The capillary should be located in an area that has an ambient temperature of approximately 74
°F (23°C). If the
temperature around the capillary is significantly higher than 74
°F (23°C), the thermometer will show a reading that is
higher than actual process temperature. If the capillary ambient temperature is significantly lower
than 74°F (23°C),
the reading will be lower than the actual process temperature
Vapour-filled Systems
• Have non-linear scales and provide economical but reliable service for most industrial applications
• To ensure accurate readings, the operating temperature should fall in the
2
/3 of the scale
• Thermometer may show a temperature offset to actual temperature value when the bulb and thermometer are
installed at different elevations. To avoid this, install the bulb and thermometer at the same elevation wherever
possible. Offset errors only occur when the thermometer’s ambient temperature is higher than the bulb temperature
Capillary Protection
• Is recommended to protect the capillary from physical damage
• Copper braided armour is used in conjunction with brass bulb
• Stainless steel armour shall be used in conjunction with 316 SS bulb
Note: Winters recommends using a stainless steel bulb and capillary for all process temperatures above 500
°F (260°C)