42213 Sarah Way, Temecula, CA 92590,
Tel: 800-854-8530 (USA)
Micro Series Thermocouple
Temperature Panel Meters
High accuracy plus linearized transmitter
& control outputs
- Available in three digit heights:
0.56" for panel mounting,
1.0" (Mighty-1) or
5.0" (Mighty-5) for
- Input for thermocouple types J, K, T, E, N, R, S.
- Input for 100 ohm platinum RTDs
with DIN and ANSI curves.
- High accuracy &
- Celsius, Fahrenheit, Kelvin or
- Selectable 1º or
- 2, 3 or 4-wire RTD connection
with lead resistance compensation.
- Upscale or downscale open sensor
- Up to 60 conversions per second.
- Peak value display.
- AC or DC powered.
- Green or red display.
- Choice of isolated plug-in
options for control and computer interface:
4-20 mA & 0-10
V analog output,
RS232/485 serial I/O,
low voltage AC & DC power.
case environmentally sealed to NEMA-4X from front panel.
- 1/8 DIN
version certified to UL 3101-1, CAN/CSA-C22.2,
EN 61010-1 (CE Mark).
Series meters with the temperature signal conditioner board provide highly accurate, stable
and repeatable temperature indication for multiple thermocouple types and 100 Ohm platinum RTDs. The meters accept type J, K, T, E, N, R and S thermocouples plus
100 ohm platinum RTDs with DIN alpha of 0.00385 or ANSI alpha of 0.003925. The
thermocouple or RTD type, range and resolution (1° or 0.1°) are selectable from the
front panel or via the serial interface. Display in Kelvin or Rankine can be selected by
offsetting the Celsius or Fahrenheit range.
Cold junction compensation automatically
corrects for temperature variations at the thermocouple reference junction at the meter.
Open sensor indication is standard and may be set up to indicate either upscale or
downscale. RTD excitation is provided by the meter. RTD connections can be of the 2-, 3-
or 4-wire type. For 3- and 4-wire connections, the meter automatically compensates for
lead resistance of the sensor.
All ranges for all temperature sensor types
are digitally calibrated at the factory. This eliminates the need for field calibration or
drift caused by potentiometers found in non-microcomputer based meters.
All Micro Ssries meters allow exceptionally fast
read rates. Concurrent Slope (Pat 5,262,780) is a method of analog-to-digital conversion
that allows up to 60 conversions per second while integrating the input over a full power
cycle. Fast read rates provide true readings and fast response for control applications.
Display of peak value is standard.
controller, RS232/485 serial communications boards can upgrade Micro
and Mighty Series meters
from stand-alone monitor to system interface and control. A Micro Series temperature meter
can serve as a linearized, scalable, ighly accurate, isolated, 4-20 mA transmitter.
meters can be powered from
95-240 Vac ±10% and 95-370 Vdc, or
optionally from 12-34 Vac and 10-48 Vdc.
Any setup functions and front panel keys may be locked out for
simplified usage and security. The popular
DIN version with 0.56" high digits is environmentally sealed to
NEMA-4X (IP65) from the front when panel mounted, and is
available with red or green LEDs.
-347°F to +1400°F
-408°F to +2501°F
-257°C to 0°C
+32°F to 752°F
-430°F to +32°F
-400°F to +1830°F
-410°F to +2370°F
-49°F to +3214°F
-51°F to +3213°F
to all TC types
Max lead resistance
Reference junction tempco
NMR at 50/60 Hz
CMR, DC-60 Hz
CMV, DC-60 Hz
Open sensor indication
Monograph 125 (IPTS-68)
1 Gohm max for rated accuracy
±0.003% of reading/ºC
±0.003% of reading/ºC
80 dB plus selectable digital filter from 80 ms
to 9.6 s time constant
120 dB with 500 W imbalance
250 Vac from power and earth grounds
Pt 100 RTD Input
-331°F to +1562°F
-331°F to +1168°F
to all RTD types
Sensor lead resistance
tempco per conductor
Open sensor indication
|IEC 751 (IPTS-68)
NIST Monograph 126
2, 3 or 4-wire connection
±0.003% of reading/ºC
2-wire, 10 mdeg/W/deg up to 10 W
3 & 4-wire, 10 mdeg/W/deg up to 100 W
Thermocouple & RTD
5 digits, 7-segment
Available with 0.56", 1.0", 4.0" or 5.0" digits.
High brightness red. Green available with 0.56" digits.
Minus sign, 2 red LED lamps
|Concurrent Slope (Pat 5,262,780)
60/s at 60 Hz, 50/s at 50 Hz
56/s at 60 Hz, 47/s at 50 Hz
3.5/s at 60 Hz, 3/s at 50 Hz
95-240 Vac ±10% and 95-370 Vdc
12-34 Vac and 10-48 Vdc
DC or 49-440 Hz
Safety-rated to 250 Vac, meter ground to earth ground,
DC to 60 Hz, 4.2 kVp per High Voltage Test
-40°C to 85°C
95% at 40°C, non-condensing
NEMA-4X (IP-65) when panel mounted
RTD Connections with
Excitation & Lead Compensation
The Micro temperature meter
allows 2-, 3- and 4-wire RTD hookup to the J5 connector. The meter applies an excitation
current of 0.2 mA, which it monitors to make ratiometric corrections for excitation supply
In 2-wire hookup, the meter
senses the voltage drop across the 100 ohm RTD and both lead wires. The effect of the lead
wires can be measured and subtracted by shorting out the RTD during meter setup.
||In 3- and 4-wire hookup, the
meter senses the voltage drop across the 100 ohm RTD and both lead wires as well as the
voltage drop across the RTD and one lead wire. This allows the meter to determine the effect of
one lead wire and mathematically subtract the effect of both lead wires.
Operation as a 4-20 mA Transmitter
With the optional analog
output board, Micro Series temperature meters can serve as superb, isolated 4-20 mA
transmitters. The analog output is scaled to the display, which is linearized to ºC or
ºF and is exceptionally accurate. The analog output further tracks the high read rate of
the meter, at up to 60 readings
per second at 60 Hz power. Fast update rates are beneficial in many closed-loop and PID
Operation as a
With the optional dual contact
relay or dual solid state relay output board options, Micro Series temperature meters can
serve as extremely fast and accurate ON/OFF controllers
for closed-loop temperature control.
Multiple setpoint operating modes are
individually selectable for each relay, as explained in the dual-setpoint controller
section. Relay duty cycles and chatter can be minimized with programmable hysteresis and
time delays. High duty cycles and extremely fast response times are possible with the
solid state relay, which has a typical response time of only 17 ms.
Operation as a Supervisory
By using the optional
dual contact relay or dual solid state relay output options, Micro Series temperature meters
can monitor processes and provide alarms or shutoffs when these processes exceed normal
A band deviation operating mode can be
selected for each relay, where an alarm is generated whenever the reading is a selected
number of counts above or below the setpoint. Relay operation can be selected as latching
or non-latching. When an alarm or shutdown condition is reached, a latched output will
remain in the alarm condition until it is reset by a front panel pushbutton, via the
serial interface, or via the rear connector.
Micro & Mighty Series Downloads