UNRESTRICTED

PR-12-Series

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RTD Probe with Cast Iron Protection Head

Our PR-12 series probe with chemical-resistant cast iron protection head

and screw-on cap includes PT100 Ω platinum RTD element or PT1000

RTD element, 1/2" NPT mounting threads and sheath of 316 stainless

steel. When properly sized, these can go directly into and bottom out in a

thermowell. All probes include a screw terminal block for easy connection of

insulated copper extension wire. Using our probe configurator, replacement

probes (without head assembly) are available as well as a "spring-loading"

option which allows for the probe to bottom out in a thermowell for quicker

and more accurate response. Applications for this probe include installation

into large vessels and tanks, as well as large pipes for temperature

monitoring.

Features



Class A accuracy, conforming to IEC 60751



Low temperature range: -50 to 250°C (-58 to 482°F)



High temperature range: -50 to 450°C (-58 to 842°F)



Extreme temperature range: -200 to 600°C (-328 to 1112°F)



Standard probe lengths of 2, 3, 4, 6, 9, 12, 18, and 24”



Resistance value: PT100 Ω or PT1000 Ω



Cast iron head with screw-on cap



Choice of PT100 and PT1000 Ω element



IP67 Ingress Protection

Specifications

Model

PR-12L (Low)

PR-12H (High)

PR-12E (Extreme)

Process Temperature

Range

-50 to 250°C

(-58 to 482°F)

-50 to 450°C

(-58 to 842°F)

-200 to 600°C

(-328 to 1112°F)

Accuracy

Class A

Class A

Class A from -100 to 450°C

(-148 to 842°F); or else Class B

Nominal Resistance and

Curve

100 Ω and 1000 Ω at 0°C standard;

TCR = 0.00385 Ω/Ω/°C standard

Process Connection

1/2” NPT

1/2” NPT

1/2” NPT

Dimensions

Diameters: 1/8, 3/16 and 1/4 inch.

Standard probe length of 2, 3, 4, 6, 12, 18 and 24 inch.

Other lengths may be built using our configurator.

Ingress Protection

IP67

IP67

IP67

Response time T90 (s)

1/8” 0.75 sec

3/16” 0.975 sec

1/4” 1.2 sec

1/8” 1.00 sec

3/16” 1.55 sec

1/4” 2.10 sec

1/8” 1.5 sec

3/16” 1.95 sec

1/4” 2.4 sec

Vibration

IEC 60068-2-6; 5 to 2000 Hz sweep rate, one active per minute;

number of sweep cycles 10 and acceleration 5g (15 probes tested together)

Duration: 1 day

Shock

IEC 60068-2-27; 50g/11ms (15 probes tested together) Duration: 1 day