Model DT335-0700
Dual RTD/Resistance Input Transmitter w/USB
Acromag, Inc. Tel: 248-295-0880
- 31 -
http://www.acromag.com
- 31 -
https://www.acromag.com
SPECIFICATIONS
Model Number
Model DT335-0700
Signal Transmitter
Isolated RTD or resistance Input
Four-Wire DC Powered
CE Approved
Includes cULus Class I, Div 2,
ATEX/IECEx approvals
Custom calibration to your
specifications can be added as a
separate line item at time of
purchase.
The DT335 model prefix denotes Dual Transmitter. The 3
rd
digit 3 denotes a 4-wire,
separately-powered member of our DIN-Mounted DT300 transmitter family. The
trailing “35” denotes an RTD or resistance input type. The trailing “
-0700
” model
suffix denotes 4-wire DC power with CE and cULus Class I, Division 2, ATEX/IECEx
Zone 2 Approvals.
Factory calibration to your own specification may be ordered as a separate line item
at the time of purchase on a per unit basis. This will require the specification of each
input range/type/wiring/break detection/units, filter level, each output range, scaled
range zeros and full-scale values. You can also specify normal or reverse acting
outputs. A standard model without adding custom factory calibration is calibrated
by default to reference test conditions with both transmitter outputs mapped to
normally acting 4 to 20mA, and medium input filters selected.
Models can be mounted on standard 35mm
“T” Type DIN rail.
Recalibration of any
model will require use of the TTC-SIP configuration kit, ordered separately (see
Accessories section).
Inputs (Each)
This model has dual isolated
inputs at TB1 and TB3 intended
for RTD or resistance sensor
connections.
This unit has three different
operating modes: dual
transmitter, single transmitter,
and CH1 signal splitter.
Input Reference Test Conditions (each):
100Ω Pt RTD, α = 0.00385;
-200°C to 850°C
input; configuration = three or four wire; filtering = medium; break detect=upscale;
Output = 4 to 20mA, ascending; R-
Load = 250Ω. Brea
k detection = Over-range;
Ambient = 25°C; Power supply = 24VDC; Unit mounted upright on a DIN rail to allow
free air flow from the bottom vent to pass through the unit and out the top vent.
Input Range & Accuracy:
Models have separate input channels at TB1 & TB3. The
input is processed differentially and ratiometrically by the A/D converter and may be
scaled separately from its output with a smaller portion of the range driving the
output.
Table 1 - Input Sensor Ranges and Accuracy at Reference Test Conditions
Input Type
°C or Ω Spans in Range
Typical Accuracy
Pt 100Ω
-200°C to +850°C
±0.25°C
Pt 200Ω
-200°C to +850°C
±0.30°C
Pt 500Ω
-200°C to +850°C
±0.50°C
Pt 1000Ω
-200°C to +850°C
±1.00°C
Ni 120Ω (Minco 7
-120)
-80°C to +320°C
±0.08°C
Cu 10Ω (Minco 16
-9)
-200°C to +270°C
±1.00°C
Resistance (Linear)
0 to 25Ω
±0.05Ω
0 to 450Ω
±0.10Ω
0 to 900Ω
±0.90Ω
0 to 2250Ω
±2.25Ω
0 to 4500Ω
±4.50Ω
Input Configuration:
Four-wire (this has negligible lead-wire effect), three-wire with
lead-wire compensation, and two-wire without lead-wire compensation.
Input Linearization:
Preset for input RTD and linearized to temperature or ohms
(resistor).
