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RTD Sensor with M12 Connector
for Process Control and Test and
Measurement Applications
PR-21 Series
ACCURACY
IEC CLASS
(±0.15ºC @ 0ºC)
U All Welded 316L Stainless
Steel Housing
U Available With or Without
Mounting Thread (
1
⁄2 NPT Mounting Threads
Available)
U Class A, Pt100 or Pt1000
4-Wire Platinum RTD Elements
per IEC60751 Standard
U Integral 4-Pin M12 Connector
for Easy Connection
U Fast Response Time
(3.5 Seconds or Less
63% Response in Water)
1
⁄4" Diameter Standard, Optional
U
1
⁄8" Diameter Available
A
1
⁄4, 3⁄8 and
PR-21B-3-100-A-1/4-0600-M12-1
Mounting thread
Probe
length
M12 4-pin connector
Probe
length
PR-21A-3-100-A-1/4-0600-M12-1.
PIN #3 PIN #2
KEYWAY
PIN #4
PIN #1
PIN #2
PIN #3
PIN #4
WIRING OPTION #2 WIRING OPTION #1
PIN #1
PIN #1
PIN #4
PIN #2
PIN #3
0.5" Ref
Standard
1.1" Ref
M12C-SIL-4-R-F-1.5,
extension cable sold
separately.
Visit omega.com/
m12c for optional
extension cables.
Probe
diameter
To Order Visit omega.com/pr-21 for Pricing and Details
Model Number Element Length (inch) Mounting Thread
PR-21A-3-100-A-1/4-0600-M12-1 Pt100, Class A 6.00 None
PR-21B-3-100-A-1/4-0600-M12-1 Pt100, Class A 6.00
PR-21C-3-100-A-1/4-0600-M12-1 Pt100, Class A 6.00
PR-21D-3-100-A-1/4-0600-M12-1 Pt100, Class A 6.00
PR-21A-3-1000-A-1/4-0600-M12-1 Pt1000, Class A 6.00 None
PR-21B-3-1000-A-1/4-0600-M12-1 Pt1000, Class A 6.00
PR-21C-3-1000-A-1/4-0600-M12-1 Pt1000, Class A 6.00
PR-21D-3-1000-A-1/4-0600-M12-1 Pt1000, Class A 6.00
For lengths other than 6", change “0600” in model number to required length and add additional cost per inch greater than 6"
(example: 9" = 0900, 41⁄2" = 0450).
1
⁄8" probe diameters, change “1/4” in model number to “1/8”, no additional cost.
For
Ordering Examples: PR-21A-3-100-A-1/4-0600-M12-1
with M12 connector.
PR-21D-3-100-A-1/4-0600-M12-1
1
⁄4" diameter probe 6" long with Pt100, Class A element, 1⁄4 NPT mounting thread, with M12 connector.
1
⁄4" diameter probe 6" long with Pt100, Class A element, no mounting thread,
1
⁄2 NPT
3
⁄8 NPT
1
⁄4 NPT
1
⁄2 NPT
3
⁄8 NPT
1
⁄4 NPT
Shop
online at
SM
To download information and to
order online, visit omega.com/sanitary
160
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RTD Sensor with M12 Connector for Process Control and Test
and Measurement Applications
M12 4-pin connector
Probe length
Probe
diameter
PR-21E-3-100-A-M6-0160-M12-1
PR-21 Series
ACCURACY
IEC CLASS
(±0.15ºC @ 0ºC)
U All Welded 316L Stainless
Steel Housing
U Available With or Without a
Mounting Thread, M8x1 and
M10x1 Mounting Threads
Available
U Class A, Pt100 or Pt1000
4-Wire Platinum RTD Elements
per IEC60751 Standard
U Integral 4-Pin M12 Connector
for Easy Connection
U Fast Response Time
(3.5 Seconds or Less
63% Response in Water)
U 6 mm Diameter Standard
(3 mm Dia Available)
A
M8X1 mounting thread
Probe length
PR-21A-3-100-A-M6-0160-M12-1
PIN #3 PIN #2
KEYWAY
PIN #4
PIN #1
PIN #2
PIN #3
PIN #4
WIRING OPTION #2 WIRING OPTION #1
PIN #1
PIN #1
PIN #4
PIN #2
PIN #3
1.1" Ref
0.5" Ref
M12C-SIL-4-R-F-1.5,
extension cable sold
separately, $10.
Visit omega.com/
m12c for optional
extension cables.
Metric
To Order (Specify Model Number)
Model Number Element Length (mm) Mounting Thread
PR-21A-3-100-A-M6-0160-M12-1 Pt100, Class A 160 None
PR-21A-3-100-A-M6-0260-M12-1 Pt100, Class A 260 None
PR-21A-3-100-A-M6-0360-M12-1 Pt100, Class A 360 None
PR-21E-3-100-A-M6-0160-M12-1 Pt100, Class A 160 M8x1
PR-21E-3-100-A-M6-0260-M12-1 Pt100, Class A 260 M8x1
PR-21E-3-100-A-M6-0360-M12-1 Pt100, Class A 360 M8x1
PR-21F-3-100-A-M6-0160-M12-1 Pt100, Class A 160 M10x1
PR-21F-3-100-A-M6-0260-M12-1 Pt100, Class A 260 M10x1
PR-21F-3-100-A-M6-0360-M12-1 Pt100, Class A 360 M10x1
For 1000 Ω, Class A elements, change “100” to “1000” in model number, no additional price.
For lengths longer than 360 mm, change “0360” in model number to required length in mm and additional cost per 25 mm to price
(example: 500 mm = 0500, 425 mm = 0425).
For 3 mm probe diameters, change “M6” in model number to “M3” for 3 mm, no additional cost.
Ordering Examples: PR-21A-3-100-A-M6-0260-M12-1 6 mm diameter probe, 260 mm long with Pt100, Class A element, no mounting thread,
with M12 connector.
PR-21F-3-100-A-M6-0160-M12-1 6 mm diameter probe, 160 mm long with Pt100, Class A element, M10x1 mounting thread, with M12 connector.
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Sanitary product line continues to expand,
visit omega.com/sanitary for details!