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MDSi8-MDSSi8
Benchtop Digital iSeries Thermometers Ten-Channel Models
- Portable, Rugged Metal Benchtop Enclosure with Tilt Handle
- 10-Channel Models
- Built Around OMEGA’s Award Winning iSeries Meters
- 5-Year Warranty
MDSi8-MDSSi8
From
$
1,854.30
Product Overview
- A/D Conversion Dual slope
- Accuracy ± 0.4 °C
- Accuracy Detail RTD (Pt, 0.00385, 100, 500, 1000 Ω) : 0.4°C, RTD (Pt, 0.00392, 100, 500, 1000 Ω) : 0.4°C
- Additional Features 1 Benchtop Enclosure
- Common Mode Rejection 120 dB
- Control Output 2 SPDT Relay
- Current Measurement Range 0 to 20 mA
- Data Interface RS232, RS422, RS485
- Data Interface Note RS232/RS422/RS485: Selectable from menu; both ASCII and MODBUS protocol selectable from menu; programmable 300 to 19.2 Kb; complete programmable setup capability; program to transmit current display, alarm status, min/max, actual measured input value and status Selectable from menu; both ASCII and MODBUS protocol selectable from menu; programmable 300 to 19.2 Kb; complete programmable setup capability; program to transmit current display, alarm status, min/max, actual measured input value and status RS485: Addressable from 0 to 199
- Decimal Selection 0, 0,001, 0,01, 0,1
- Digital Filter Programmable
- Display Color Red, Green, Amber
- Display Size 10.2 mm (0.40 in)
- Display Type 4 Digit, 9 Segment LED
- Display Type Note 4-digit, 9-segment LED, 10.2 mm (0.40") i32, i16, i16D, i8DV: 21 mm (0.83") i8: 10.2 mm (0.40") and 21 mm (0.83"), i8DH—GREEN, AMBER, and RED programmable colors for process variable, setpoint and temperatureunits
- Electrical Connection Sub-D Female Miniature Connector
- Electrical Connection Note DB-9 connector on rear panel; optional alarm 1 and 2 (programmable)
- Form factor 1/8 DIN
- Frequency 50 to 60 Hz
- Impedance Input 10 MΩ for 100 mV, 1 MΩ for 1 or 10 Vdc
- Input Configuration Single-ended
- Normal Mode Rejection 60 dB
- Number of Inputs 1
- Offset Adjustment -1999 to +9999
- Output Detail Optional Alarm 1 and 2 (Programmable) Type: Form “C” SPDT relays Operation: High/low, above/below, (limited output to 30 Vrms only) band, latch/unlatch, normally open/normally closed and process/deviation; front panel configurations Optional Analog Output (Programmable): Non-isolated, retransmission 0 to 10 Vdc or 0 to 20 mA, 500 Ω max (output 1 only). Accuracy is ± 1% of FS when following conditions are satisfied. 1) Input is not scaled below 1% of input FS 2) Analog output is not scaled below 3% of output FS ;
- Polarity Unipolar
- Reading Rate 3 samples/sec
- Resolution 1°/0.1°; 10 µV process
- Series ID MDSi8-MDSSi8
- Set Point Adjustment -1999 to 9999 counts
- Span Adjustment 0.001 to 9999 counts, programmable
- Step Response 0.7 sec for 99.9%
- Supply Voltage 90 to 240 Vac
- Temperature Measurement Range RTD (Pt, 0.00385, 100, 500, 1000 Ω) : -200 to 900°C, RTD (Pt, 0.00392, 100, 500, 1000 Ω) : -200 to 850°C
- Temperature Stability 0.04°C/°C
Supported Applications
The Omega MDSi8 and MDSSi8 series are benchtop digital thermometers designed for single-channel (10-point) or ten-channel monitoring. These universal instruments handle temperature inputs from common thermocouple types, multiple RTD configurations, as well as process voltage and current signals. The ¼ DIN size meters feature a rugged metal enclosure suitable for laboratory benches or industrial control panels where large-format display visibility is required.
Operating Conditions & Performance
The series supports measurement ranges spanning from -50 to 40°C/40 to 1768°C up to high-temperature thermocouple limits such as 0 to 2320°C/32 to 4208°F for Type B inputs. Accuracy specifications vary by input type: process voltage and current ranges offer ±0.03% reading accuracy, while temperature measurements range from ±0.4°C (±0.7°F) for Types J, L, C, RTD, and N, to ±1.0°C/±1.8°F or ±1.0°C/±0.5°C depending on the thermocouple type.
Resolution is 1° or 0.1° for temperature inputs and 10 μV for process signals. The response time is specified as 0.7 s for 99.9% of a step change. Power requirements are universal at 90 to 240 Vac, 50 to 60 Hz.
Configuration Options
The series offers configurable models based on channel count and input type:
- MDSi8 / MDSi8A: Single-channel benchtop thermometers with universal inputs (thermocouple, RTD, process voltage/current). The 'A' suffix indicates inclusion of an analog output.
- MDSi8S: A dedicated single-channel strain meter variant.
- MDSSi8-TC / MDSSi8A-TC: Ten-channel models with dedicated thermocouple inputs; 'A' adds analog output capability.
- MDSSi8-RTD / MDSSi8A-RTD: Ten-channel models configured for 100 Ω RTD inputs, with optional configuration for 500 or 1000 Ω RTDs on ten-channel units only.
- MDSSi8-PV / MDSSi8A-PV: Ten-channel process meters dedicated to voltage and current inputs.
Communication and control options include isolated RS232/RS485-422 serial ports, Ethernet with an embedded web server (not available on 'A' models), and dual alarm relays rated at 3 A @ 120/240 Vac. Analog outputs provide 0 to 10 Vdc or 0 to 20 mA signals.
Key Product Differences
The primary distinction between the MDSi8 and MDSSi8 families is channel capacity: single-channel versus ten-channel dedicated inputs. Within each family, models are differentiated by input type (universal vs. thermocouple/RTD/process) and output features.
- Analog Output: Models with the 'A' suffix include an isolated programmable analog output; these units do not support Ethernet options.
- Communication Options: The '-C24' option provides RS232/RS485-422, while '-EIT' adds Ethernet connectivity. A combined '-C4EIT' option is available for both serial and network communication on compatible models.
- Alarm Relays: The '-AL' suffix denotes dual form 'C' SPDT alarm relays.
The series includes a 5-year warranty and carries UL, cUL, and RoHS 2 Compliant certifications. Power cords are available for North America (120 Vac), Continental Europe, UK, Italy/Ireland, Denmark, or stripped ends for global installation up to 250 Vac.
PDFs & Manuals
