When quality and performance are as important as price, call.ħ300 Commerce Lane/Minneapolis, Minnesota 55432-3177 U.S.A. 00385 TCR )ĭimensions: All dimensions are in inches ( millimeters ) Temperature Range: Choose a code corresponding to the desired temperature range. Output: 0 to 1 mA DC over specified range.Īccuracy: +/- 0.1% of span when factory calibrated.Īdjustments: 3 field selectable temperatures ranges, Input: 2- or 3-wire 100 ohm platinum RTD's. Physical: Epoxy potted for moisture resistance. Maximum Load Resistance: The maximum allowableĬonnections: Terminal blocks accept wires from AWG Lead Wire Compensation (3-wire RTD): +/- 0.05% of Voltage effect: +/- 0.001% of span per volt. The zero and span pots are noninteracting so further adjustment should be minimal. Repeat steps 4 - 7 until no further adjustment is necessary. Adjust SPAN potentiometer until the meter reads 1 volt (1 volt x 1000 Ω = 1 mA).Ĩ. Set decade box resistance to simulate the desired span temperature.ħ. Adjust ZERO potentiometer until the meter reads. Set decade box resistance to simulate 6 ☌ (102.34 Ω).ĥ. ![]() Resistance settings using a known-accurate ohmmeter and record decade box settings beforeĬonnecting decade box to the transmitter.Ĥ. If unsure or concerned about the decade box's accuracy, measure the zero and span Connect a resistance decade box with a resolution of at least. The requiredĬalibration voltage measured on the DMM is dependent on the value of Rload according to theįollowing formula: V(DMM) = Rload x Current (Ohm's Law)ģ. Resistances can be used as long as the maximum of 1000Ω is not exceeded. If unsure of the decade box's accuracy, measure using the DMM. The load resistor should have an accuracy ofġ000Ω +/-. HT880 Industrial-grade, 2.5 RH, 4-20 mA transmitter HT885D Industrial-grade, 2.5 RH, 4-20 mA transmitter with LCD display CALIBRATION N25 NIST three-point 2.5 calibration certificate S25 Standard 2. Multimeter (4-½digit minimum) as shown below. Connect a power supply of 24 VDC, a 1000Ω load resistor (decade box), and a digital ![]() Select the desired temperature range by soldering the two designated pins together.Ģ. If the transmitter is calibrated at 0 ☌, the output ofġ. To ensure proper calibration of the transmitter. The zero calibration should be performed at 6 ☌ (.05 mA) ![]() NOTE: Because the transmitter cannot output a negative current, the calibration of the zeroĬannot be performed at 0 ☌ (0 mA). Must be connected as shown or the transmitter will not function properly.ħ300 Commerce Lane, Minneapolis, MN 55432-3177 U.S.A. The RTD connections for the Temptran in the wiring diagram below Mount with #8 machine screws using the two mounting holesĬonnect the Temptran as shown below, observing the +/- polarity of the power supplyĬonnections. Locate the Temptran near the RTD, in an area where the ambient temperature stays between 40 and 85 ☌ (-40 and 185 ☏). Temperature of the range, rising to 1 mA at the top of the range. TheĬurrent changes according to the range marked on the Temptran: 0 mA at the lowest The Temptran converts the RTD's signal into a 0 to 1 mA current. Hazardous protection methods include explosion proof, flameproof and intrinsic safety methods.Model TT269 is a 3-wire temperature transmitter for RTD (resistance temperature detector) Choose a thermowell option for high pressure or flow applications. The sensing probe features a copper alloy tip for quick response to temperature changes. Minco’s spring loaded holder ensures solid contact in drilled holes and has a built-in oil seal. Hazardous area rated temperature assemblies provide fast and accurate readings of bearings, blocks, frames, other surfaces, fluids or flows.
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