Pharmaceuticals Sensor Solutions | DuoMy Industrial Sensors

DM-SC04 4-Channel Isolating Signal Conditioner

Sat, 31 Oct 2026 09:33:22 +0000

Overview

The DM-SC04 puts four isolated channels into a 22.5 mm DIN-rail module. Each channel accepts 4-20 mA, 0-10 V, RTD, thermocouple or potentiometer input and produces a 4-20 mA or 0-10 V output, with 1,500 VAC isolation between input, output and supply.

The practical value is in retrofits. When a panel picks up noise from a new variable frequency drive, or when a sensor in another building creates an earth loop, adding an isolating conditioner at the panel boundary fixes the signal without touching the sensor, the cable route or the PLC card.

Key features

Four isolated channels in a 22.5 mm DIN-rail module
Universal input: mA, V, RTD, thermocouple, potentiometer
1,500 VAC three-way galvanic isolation
0.1% of span accuracy with 10-50 ms response
DIP switch configuration, no software required
Removable terminals and channel status LEDs

Typical applications

Breaking earth loops on long analogue runs
Rejecting common-mode noise from VFDs and welders
Converting RTD or thermocouple signals to 4-20 mA
Standardising mixed signals in a retrofit panel

Wiring note

Isolation removes the conductive path, but it does not fix a bad shield termination. Bond the cable shield at one end only, keep the shield continuous through junction boxes, and separate signal cable from drive output cable by at least 200 mm in the duct.

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DM-MA08 Piezo Micro Actuator, 8 µm Stroke, 0.1 nm Resolution

Sat, 31 Oct 2026 09:33:21 +0000

Overview

The DM-MA08 is a solid-state actuator: a stack of ceramic layers expands when voltage is applied, with no gears, screws or bearings in the motion path. There is nothing to wear and nothing to develop backlash, and the response is fast enough to be used for active vibration damping as well as static positioning.

Resolution is limited by the driver noise, not by the actuator, and reaches 0.1 nm with a low-noise amplifier. The trade-off is stroke: 8 µm open loop, or 10 µm with the optional strain gauge feedback for closed-loop control that removes hysteresis and creep.

Key features

8 µm open-loop stroke, 10 µm with closed-loop feedback
0.1 nm resolution with a low-noise driver
Microsecond response, suitable for active damping
Optional integrated strain gauge for closed-loop control
Vacuum-compatible version for chamber use
Preloaded housing for push and pull operation

Typical applications

Optical path length and mirror alignment
Nanometre positioning on inspection stages
Active vibration cancellation
Micro-dispensing and valve actuation

Driver requirement

A piezo actuator needs a dedicated amplifier, not a DC supply. We supply a matched 0-150 V amplifier with USB and 0-10 V control, and we recommend ordering actuator and amplifier as a pair so the calibration covers both.

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DM-TT200 Head-Mount Temperature Transmitter, 4-20 mA / HART

Sat, 31 Oct 2026 09:33:13 +0000

Overview

The DM-TT200 converts an RTD or thermocouple signal into a 4-20 mA loop inside the connection head, metres away from the measurement point. That short analogue path is the whole point: the low-level sensor signal stays inside a shielded head instead of travelling down a cable next to a drive, and the control system receives a robust current loop.

The input is universal and configured by software, covering PT100, PT1000, Ni1000, thermocouple types K, J, T, E, N, R, S, B, and millivolt or resistance inputs. Sensor matching (Callendar-Van Dusen coefficients) can be entered for a specific probe, which brings a standard Class A element closer to a calibrated pair without buying a tighter element.

Key features

Universal input: RTD, thermocouple, mV, resistance
4-20 mA output with HART 7 digital communication
1,500 VAC galvanic isolation between input and output
Sensor matching via CVD coefficients for individual probes
Sensor break and short-circuit detection with configurable drive
Fits DIN B connection heads, 34 mm diameter, 22 mm height

Typical applications

Process temperature loops on RTD and thermocouple probes
Retrofit of direct-wired RTDs onto an existing 4-20 mA card
Hazardous-area loops with intrinsic safety barriers
Sanitary probe assemblies in food and pharmaceutical service

Commissioning note

Configure the input type and range before installation, then verify the loop current at two points. A transmitter configured for a 3-wire PT100 on a 4-wire probe will read a plausible but wrong value, which is harder to find later than an outright failure.

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DM-TS100 PT100 RTD Probe, -50 to +400 °C

Sat, 31 Oct 2026 09:33:12 +0000

Overview

The DM-TS100 is a general-purpose platinum resistance probe for process and utility temperature measurement. The element is a Class A PT100 in a 6 mm 316L stainless sheath, wired 4-wire so the lead resistance cancels out and the reading does not change when the cable length changes.

The probe is available with a fixed G1/2 thread or a spring-loaded compression fitting that holds the tip against the pipe wall or thermowell bottom. Spring loading removes the air gap that causes slow and low readings on immersion probes, which is the most common installation error in temperature measurement.

Key features

Class A PT100 element, ±0.15 °C at 0 °C, 4-wire connection
6 mm 316L stainless sheath, length 100 to 500 mm
Response time t90 = 8 s in flowing water
G1/2 thread, spring-loaded compression fitting or clamp connection
-50 to +400 °C range, IP67 connection head
Optional 3-point calibration certificate

Typical applications

Hot water and steam line temperature
Bearing and gearbox temperature monitoring
HVAC immersion and duct temperature
Sanitary process temperature with clamp connection

Selection note

Immersion depth should be at least ten sheath diameters in liquid and more in gas. A 6 mm probe fitted into a 30 mm pocket will read the pocket wall, not the process, and the error grows as the pipe temperature diverges from the media temperature.

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DM-PD100 Differential Pressure Transmitter, 0-10 kPa

Sat, 31 Oct 2026 09:33:11 +0000

Overview

The DM-PD100 measures the difference between two pressure ports rather than a single line pressure, which is what filter monitoring, room pressure cascades and orifice-plate flow measurement actually require. The two-port capsule is machined from a single stainless block, so thermal gradients across the body do not create the offset that plagues assembled differential sensors.

Accuracy is 0.075% of span, and the static line pressure rating of 160 bar means the transmitter can sit on a high-pressure filter housing while still resolving a 2 kPa pressure drop. The 4-20 mA output is loop-powered, and the zero and span are adjustable from the front panel without opening the housing.

Key features

0-10 kPa differential range with 160 bar static line pressure
0.075% FS accuracy including thermal effect over the compensated range
Single-block stainless capsule, no internal elastomer seals
Front-accessible zero and span adjustment
Two 1/4 NPT or G1/4 process ports with bleed valves
Optional three-valve manifold for in-service zeroing

Typical applications

Filter and strainer differential pressure monitoring
Cleanroom and corridor pressure cascade control
Orifice plate and Venturi flow measurement
Tank level by hydrostatic differential measurement

Installation note

Mount the transmitter below the tap points for liquid service and above them for gas, with equal-length impulse lines sloping continuously to the process. Unequal line length or a trapped condensate slug shifts the zero, and no amount of configuration will remove it.

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