Catalogue Sensors & Instruments Solutions Guide
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Tip-sensitive RTDs with Thermowells
Minco's Temptran™ RTD transmitters providea4to20mA signal that can be sent over long distances with a simple 2-wire system. Add any Minco model transmitter (except electrically isolated models). See Section 5 for complete details and ordering information.
Special high-accuracy calibration: For guaranteed system accuracy of ± 0.75% of temperature span, specify transmitters with high accuracy calibration. Calibration data traceable to NIST will also be provided. Get more information on page 5-18.
^ CONDUITTHREAD % -14 NPTTHREAD: 0.750" (19.0 mm)
SHOWN WITH STAINLESS STEEL HEAD AND UNION/NIPPLE EXTENSION
Overview
Thermowells protect sensors from the effects of fluid flow and pressure. These assemblies are spring-loaded for positive probe contact against the bottom of the thermowell.The probe's cop­per alloy tip provides superior time response and reduces error from stem conduction.
• 316 stainless steel thermowell
• Tip-sensitive RTD probe for use to 260°C (500°F)
• Spring-loaded probe
• Cast iron, stainless steel, or aluminum connection head Specifications
Temperature range: -50 to 260°C (-58 to 500°F). Material:
Probe: Stainless steel with copper alloy tip. Connection head: Cast iron, aluminum, or stainless steel. Thermowell: 316 stainless steel. Extension: Stainless steel.
Pressure rating: 7000 psi (483 bar) at 21°C, reducing to 6300 psi (433 bar) at 260°C.
Standard U dimensions: 2.5,4.5, 6.0, 7.5,8.0,10.5,13.5,16.5, and 22.5".
Insulation resistance: 100 megohms minimum at 100 VDC, leads to case.
Connection: Terminal block for wires to AWG 14. Time constant: 17 seconds typical in moving water.
Specification and order options
AS5140
Assembly number
AS5140: Single element RTD AS5141: Dual element RTD
CA
Sensing element from table
60
Thermowell length U:
Specify in 0.1" increments (Ex: 60 = 6.0 inches)
Z
Leads per sensing element:
Y = 2 leads
Z = 3 leads (required for CA and CC elements) X = 4 leads (PD elements only)
2
Conduit thread:
1= 1/2-l4NPT 2= 3/4-14NPT
C
Connection head:
C = Cast iron A = Aluminum S = Stainless steel
1
Thermowell process thread:
1= 1/2-14NPT 2= 3/4-14NPT
U
Extension option:
P = Coupling/nipple extension
N = No extension
U = Union/Nipple extension
To order sensor assembly, stop here.
To order with transmitters (single platinum element only, 2
or 3 leads) add:
211
Temptran™ transmitter model:
211 = TT211: 2-lead RTDs
176=TT176: 3-lead RTDs
711 = TT711: 2-lead RTDs, match calibrated
676 =TT676: 3-lead RTDs, match calibrated
A
Temperature range codes on page 5-16 or at www.minco.com/rangecode
AS5140CA60Z2C1U211A = Sample part number
Sensing elements
Element
Code
Platinum (0.00392 TCR)
100 Q ±0.5% at 0°C
PA
Platinum (0.00385 TCR)
100 Q ±0.1% at 0°C
PD
(Meets EN60751, Class B)
Platinum (0.00385 TCR)
100 Q ±0.5% at 0°C
PE
Copper (0.00427 TCR)
10 Q ±0.2% at 25°C
CA
(dual)
10 Q ±0.5% at 25°C
CC
Nickel (0.00672 TCR)
120 Q ±0.5% at 0°C
NA
Specify and order products at: www.minco.com/sensors_config
Specifications subject to change
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