The Mescon PTH-400 series is a unique PC-programmable 2-wire transmitter family. The units feature a
state of the art micro-processor based design which enables full configuration with Mescon's JUST-PC
Technology using the MESCONfigurator, user friendly configuration software. This combination eliminates
the need for jumpers, calibrators, screw-drivers and hand-held programmers. The PTH-400 is the thermal
head version of an entire family of products. Other JUST-PC
technology instruments are available for field mount, high density DIN
rail and low density DIN rail with display applications.
through the PC's RS232 serial port.
SPECIFICATIONS
INPUT CONFIGURATIONS
Thermocouples ........... Most standard types and all special
types using customer defined tables
and polynomials.
RTD ............................ 2, 3, and 4 wire, Pt-100, Ni-110 and
other RTDs. Includes CallandarVan-Dusen
adaptation and custom
sensors linearization with user
defined tables and polynomials.
Potentiometers ............ to 20 Ký
Resistance .................. to 400 ý
DC-mV ........................ 10 to 100 mV
GENERAL SPECIFICATIONS
Minimum Range.......... 2 mV. Limited mostly by input signal
quality.
Output ......................... 4-20mA isolated loop powered.
Supply Voltage ............ 9-40 VDC (@ no load). Reverse
polarity protected.
Maximum Load ........... Rmax = (Vsupply - 9V) ÷ 20mA
Operating
Temperature................ 40°C to +85°C
Storage
Temperature................ 55°C to +125°C
Humidity ...................... 0-95% RH, non-condensing.
Response Time ........... 0.3 seconds, to 90% of input.
(> 3 updates per second).
Damping Factors ........ Programmable 0.0 to 64.0 seconds, to
0 - 120% of input range, using
MESCONfigurator software interface.
Stability ....................... Better than ±0.1% of span for 12
months.
I/O Isolation ....................... 2000 VDC or peak AC.
RFI Protection ................... < 1% effect of span at 20-1000
MHz and at field strength of
20V/m. marked.
PERFORMANCE SPECIFICATIONS
Output Resolution ............. 0.015% of span (2.5µA).
Output (D/A) Linearity .......Better than 0.02% of output span.
Sensor
Linearization ......................Better than 0.1°C for RTDs.
Better than 0.2°C for T/C.
Cold Junction
Compensation ...................Automatic to within ±0.7°C
for all T/C.
Temperature Stability ........ 0.015%/°C combined ZERO
and SPAN.
Supply Voltage Effect: ....... <±0.003% per Volt.
Calibration .........................Automatic. Unit includes all of
the calibration parameters. It
performs periodic zero, span,
self-test, and auto calibration.
Input Linearity ....................Better than 0.01% of span (mV input).
All specifications are subject to change without notice.
ORDERING INFORMATION
PTH - 4 X 0
PTH 4 X 0
0 = Temp
4 = Thermistor
PA - 400 Programming Adapter (RS232)
Please request our ordering and calibration diskette
describing the rest of Mescon's products.
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