RTD Calibrator
Model 111
• World standard Platinum 100
Ω
RTD
DIN/IEC 751 curve a=1.3850(0.00385)
• Simulate & read 2,3 wire RTDs & ohms
Temperatures from -200.0 to 850.0°C;
-328.0 to 1562.0 °F
Ohms from 0.00 to 410.00
Ω
• 0.05% accuracy
Accurate to 1°F or 0.6°C
• 1° or 0.1° resolution
Field Selectable °F or °C
• "Quik-Chek™ " switch
Instantly recall three outputs; HI, LO & Set
Altek’s Model 111 RTD Calibrator lets you simulate
and read RTDs over the entire industrial temperature
range. Use with transmitters, single & dual channel
recorders, controllers, alarms and indicators.
Field customize the Model 111 to lock-in 0.1° or 1°
resolution, fixed °C or °F or front selectable °F/°C
operation. Read and simulate 2-wire and automatical-
ly compensate for 3-wire RTDs with built-in leads.
Simulate an RTD sensor
Resolution is 0.1° C or F simulating the full range of
Platinum 100 ohm RTDs into devices supplying a
continuous excitation current of 0.09 to 1.1 mA. From
1.1 to 5.800 mA continuous excitation current the 111
resolution automatically adjusts to 1° C or F. Ohms
range provides 0.01 ohm resolution from 0.00 to
410.00 ohms which automactically switches to 0.1
ohm resolution for continuous excitation currents
above 1.1 mA.
Instantly recall three output temperatures
“QUIK-CHEK” function stores three output tempera-
tures for real convenience. The Model 111 simulates
key temperatures for repetitive calibrations. Turn the
knob to check trip points, controller action or
hysteresis. The fast response 111 sets quickly without
overshoot. Memory is retained even when power is
off.
Measure RTD sensors
The Model 111 display gives you fast, accurate tem-
perature measurement with 0.1 and 1 degree or with
0.01 and 0.1 ohm resolution. Two and three wire
hookups assure accuracy in short or long cable runs.
Open RTDs and leads are detected and indicated on
the LCD display. Two readings per second track fast
moving temperatures.
Recall maximum and minimum temperatures
“MAX” and “MIN” memories are continuously updated
from turn-on or whenever the “RESET” button is
pressed. Model 111 gives you a handy tool to monitor
temperatures for drift or control deviation. Just flip the
Quik-Chek switch to display the minimum and
maximum temperature measured since reset.
Calibrating additional instruments
For multichannel recorders, data acquisition, computer
systems and smart transmitters Altek recommends
using the Model 311A RTD Calibrator in place of the
111. The Model 311A is designed to operate with
many devices that use pulsed or intermittent excitation
currents to read an RTD. The 311A also operates with
devices requiring 4 wire RTDs and has additional RTD
types for other Platinum, Copper and Nickel sensors.
General description
