Altek 211 User Manual

RTD Calibrator
Model 211
• 8 RTD types & ohms
Select Pt, Cu, or Ni
• Temperature input & output
Directly in degrees
• 0.025% accuracy
Accurate to 0.25°F or 0.15°C
• 1° or 0.1° resolution
Field Selectable °F or °C
• "Quik-Chek™ " switch
Instantly recall three outputs; HI, LO & Set
Altek’s Model 211 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. Switch
between four Pt 100, one Pt 1000, one Cu 10, two Ni
RTD curves or ohms ranges from 0.00 to 410.00 and
0.0 to 2010.0.
Field customize the Model 211 to lock-in 1° resolution,
fixed ° C or ° F or front selectable ° F/° C operation.
Read and simulate 2-wire and automatically compen-
sate for 3-wire RTDs with built-in leads. A plug-in lead
is supplied for 4-wire RTD measurements. RTD types
may be selected each time the unit is turned on. If you
always use one RTD curve, lock-in the selected RTD
type with the internal DIP switch to prevent accidental
change to an unwanted RTD type.
Simulate an RTD sensor
Resolution is 0.1° C or F simulating the full range of
Pt 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 pro-
vides 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 211 simulates
key temperatures for repetitive calibrations. Turn the
knob to check trip points, controller action or
hysteresis. The fast response 211 sets quickly without
overshoot. Memory is retained even when power is
off.
Measure RTDs sensors
The Model 211 display gives you fast, accurate tem-
perature measurement with 0.1 and 1 degree or with
0.01 and 0.1 ohm resolution. Two, three and four 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 211 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
211. The Model 311A is designed to operate with
many devices that use pulsed or intermittent excitation
currents to read an RTD.
General description

Altek 211 Specifications

General

Brand	Altek
Model	211
Category	Test Equipment
Language	English

Summary

General description

Simulate an RTD sensor

Simulates Pt 100 ohm RTDs with 0.1° C/F resolution using 0.09 to 1.1 mA excitation.

Instantly recall three output temperatures

Quik-Chek function stores three output temperatures for quick recall of key calibration points.

Measure RTD sensors

Provides fast, accurate temperature measurement with 0.1° resolution and 2 readings/sec.

Recall maximum and minimum temperatures

MAX/MIN memories continuously updated from turn-on or reset to monitor temperature drift.

Calibrating additional instruments

Recommends Model 311A for devices using pulsed or intermittent excitation currents.

General instructions

Connections

Details 2, 3, or 4 wire RTD connections, emphasizing lead length and material for accuracy.

Using F/C mode

Explains how to select temperature scale using the QUIK-CHEK switch or internal DIP switch.

Selecting °F or °C

Describes internal configuration modes for full-time °F, full-time °C, or front-panel selection.

Selecting autoranging or 1° resolution

Allows internal configuration for autoranging 0.1°/1° or fixed 1° temperature display.

Over range/under range

Indicates out-of-range temperatures with OVER/UNDER on display; SIM flashing for excitation issues.

Changing battery

Provides instructions for replacing the 9-volt battery and retaining memory settings.

Setting operating mode (DIP switches)

Details DIP switch settings for autoranging, fixed RTD type, temperature scale, and excitation current.

Simulate RTD or resistance

Simulate

Guides on setting up the Model 211 for RTD type, temperature scale, and adjusting output value.

Store

Explains how to store values in HI or LO positions using the STORE pushbutton.

Instantly recall temperatures

Allows recalling stored HI & LO values anytime by switching the QUIK-CHEK switch.

Selecting fixed/intermittent current

Describes choosing between fixed or intermittent excitation currents for transmitters.

Read an RTD sensor

Read

Instructions for setting up, connecting, and displaying RTD readings in Celsius or Fahrenheit.

Input

Details the Model 211's ability to measure temperatures in two ranges with 0.1° resolution.

Open RTDs

Explains how the display indicates open or high resistance connections, and out-of-range temperatures.

MIN/MAX

Describes how to view and reset the maximum or minimum temperature measured since mode entry.

Specifications

General

Lists accuracy, temperature drift, operating/storage ranges, and physical dimensions.

Simulate RTD or resistance

Details output resistance range, external excitation current limits, and intermittent current mode.

Measuring RTD sensors

Specifies excitation current, normal/common mode rejection, and sensor measurement capabilities.

Types, ranges, resolution and accuracy

Table detailing RTD types, alpha values, temperature ranges, and accuracy in C and F.

Warranty

Altek Industries, Inc.

Provides contact information, address, and website for Altek Industries, Inc.