No products in the cart.
Product Description
£380.00 ex VAT | £456.00 Inc VAT
Digital precision measuring connector with highest resolution of 0.001 K across the entire measuring range up to 400 °C
Linearization of the Pt100 characteristic calculated
Calibration with greater accuracy by subjecting the temperature sensor to multi-point adjustment
For ALMEMO® V7 measuring instruments, including ALMEMO® 500, 710, 809, 202, 204.
Available to Order
Email to a friendTechnical Specification
| Sensor type | Pt100, 4 conductors |
| Measuring input | electrically interconnected with the power supply (ALMEMO® device ground) |
| Measuring range | -200 to +400 °C |
| Resolution | 0.001 K |
| Conversion time: | 3.4 seconds |
| Measuring current | approx. 1 mA |
| Linearization | calculated (not an approximation) |
| Accuracy | ± 0.015K ± 2 digits |
| Nominal temperature | +22 °C ±2 K |
| Temperature drift | 0.003 % / K (30 ppm) (resistance) |
| Supply voltage | starting at 6 V from ALMEMO® device (sensor supply voltage) |
| Current consumption | approx. 9 mA |
Technical Features
- The digital ALMEMO® D7 precision measuring connector becomes a reference sensor with highest accuracy when used with a suitable Pt100 sensor.
- The digital ALMEMO® D7 precision measuring connector uses its own integrated A/D converter. It provides a highest resolution of 0.001 K across the entire measuring range up to 400 °C.
- Linearization of the Pt100 characteristic curve in the measuring connector is calculated in compliance with DIN IEC 751 (not an approximation).
- The overall accuracy of the measuring operation is unaffected by the presence of an ALMEMO® V7 display device / data logger. The whole measuring chain, comprising e.g. a Pt100 sensor and the connected ALMEMO® D7 measuring connector, can be calibrated end-to-end. Calibration can be performed with greater accuracy by subjecting the temperature sensor to a process of multi-point adjustment.
- The measuring rate is determined entirely and exclusively by the integrated A/D converter. On the ALMEMO® V7 measuring instrument all D7 measuring connectors operate in parallel at their own measuring rate. The measuring instrument‘s very short scan cycle is determined by the measuring rates of the D7
measuring connectors – irrespective of their number. - Sensor identification can be programmed with designations up to 20 characters in length.
Suitable Sensors
Note on suitable sensors:
The sensor determines the accuracy, stability, hysteresis and long-term stability of the measuring chain consisting of sensor and digital connector. For the sensor, the following must be taken into account:
- The type of Pt100 sensor element determines, among other things, the achievable measurement uncertainty / stability.
- The design (sensor diameter, installation of the sensor element, powdered or with thermal paste) influences the self heating and the hysteresis for the measurement uncertainty.
The self-heating must be included in the measurement uncertainty: If the self-heating is NOT known for the sensor design at hand, a lump sum must be charged.
Example: For a sufficiently long sheath element, an amount of 17 mK is recommended. In comparison: For the Ahlborn precision probe FPA923/FPD723 the self-heating was determined and is included in the measurement uncertainty with typ. 2 mK. The hysteresis must be described in addition to the measurement uncertainty:
If the hysteresis is not determined, a lump sum of up to 0.2 % of the span is recommended in international regulations.
Example: Calibration range 0 to 400 °C, hysteresis lump sum up to 0.8 K or calibration range 0 to 100 °C up to 0.2 K (200 mK).
Related Products
Measuring range -20 to +20 mA. Fast measuring rate, up to 1000 measuring operations per second (mops) at resolution up to 10 μA (1000 mops) or High resolution up to 0.1 μA (5 mops). Internal resistance 130 Ohm. Overload ± 28 mA , Only for latest ALMEMO® V7 measuring instruments, including precision measuring instruments ALMEMO® 500, 710, 809 or 202.
£146.00 – £158.00 Select options
Digital measuring head for UVE radiation, for outdoor use. Sensor with permanently attached cable, 1,5 m, with ALMEMO® D7-connector
Monitoring of UVE-radiation hazardous for human skin.
Stationary measurements in meteorological applications. Supplement to the weather station FMD7 60.
For connection to current measuring instruments ALMEMO® V7 : ALMEMO® 500, 710, 809, 202, 204
£3,080.00 ex VAT | £3,696.00 Inc VAT Add to basket
- Measure dynamic temperature changes with up to 100 measurement operations per second.
- One single connector for different thermocouple types (programmable).
- Optimal linearization accuracy of the thermocouple characteristic by calculation methods as per the DIN IEC 584.
- Increased accuracy thanks to multi-point adjustment of the thermocouple sensor during calibration. For current measuring instruments ALMEMO® V7, i.a. the precision measuring instruments ALMEMO® 710 or ALMEMO® 202.
Fast measuring rate, up to 1000 measuring operations per second (mops) at resolution up to 1 mV / 10 μA (2,000 digits) or High resolution up to 0.001 mV / 0.1 μA (200,000 digits) at 5 mops. Only for latest ALMEMO® V7 measuring instruments, including precision measuring instruments ALMEMO® 500, 710, 809 or 202.
£146.00 – £158.00 Select options
2 ALMEMO® measuring channels: voltage, frequency. Measuring module including touch proof connecting cable, ALMEMO® connection cable permanently connected to the ALMEMO® D7 plug.
For acquiring the true root mean square (RMS) value of a sinusoidal AC signal. Sampling rate of 1000 mops.
Overvoltage proof measuring input. Galvanically isolated up to 6 kV.
For connecting current ALMEMO® V7 measuring instruments: ALMEMO® 500, 710, 809, 202, 204
£460.00 Select options
Dynamic measurement of DC signals with 1000 mops (measuring operation per second).
Overvoltage proof measuring input. Galvanically isolated up to 6 kV.
For connecting current ALMEMO® V7 measuring instruments: ALMEMO® 500, 710, 809, 202, 204
£415.00 Select options
Digital probe for measuring conductivity, integrated temperature sensor, with permanently fitted cable with ALMEMO® D7 plug.
£615.00 ex VAT | £738.00 Inc VAT Add to basket- Just one single probe for measuring conductivity from very low (10 μS/cm) up to very high levels (500 mS/cm)
- 4-contact graphite electrode with high linearity across the whole measuring range
- Integrated NTC sensor for temperature compensation of measured conductivity values
- Suitable for the latest ALMEMO® V7 devices, including professional measuring instrument ALMEMO® 202 and precision measuring instrument ALMEMO® 710
For force transducers (tension / compression), torque transducers, or strain gauges. High-speed measuring at 1000 measuring operations per second (mops) and resolution 50,000 digits or high-level resolution at up to 200,000 digits and 10 mops. Only for latest ALMEMO® V7 measuring instruments, including precision measuring instruments ALMEMO® 710 or
ALMEMO® 202.
£146.00 ex VAT | £175.20 Inc VAT Add to basket
Digital probe for measuring conductivity, integrated temperature sensor, with process connection G ¾-inch, permanently fitted cable with ALMEMO® D7 plug.
£635.00 ex VAT | £762.00 Inc VAT Add to basket- Just one single probe for measuring conductivity from very low (10 μS/cm) up to very high levels (500 mS/cm)
- 4-contact graphite electrode with high linearity across the whole measuring range
- Integrated NTC sensor for temperature compensation of measured conductivity values
- Suitable for the latest ALMEMO® V7 devices, including professional measuring instrument ALMEMO® 202 and precision measuring instrument ALMEMO® 710
High-level resolution of 0.01 K across the entire measuring range up to 850 °C. Linearization of the Pt100/Pt1000 characteristic calculated error-free. Calibration with greater accuracy by subjecting the Pt100 sensor to multi-point adjustment. Only for latest ALMEMO® V7 measuring instruments, including precision measuring instruments ALMEMO® 500, 710, 809 and 202.
£146.00 – £168.00 Select options
2 ALMEMO® measuring channels: current, frequency. Measuring module including touch proof connecting cable, ALMEMO® connection cable permanently connected to the ALMEMO® D7 plug.
For acquiring the true root mean square (RMS) value of a sinusoidal AC signal. Sampling rate of 1000 mops.
Overvoltage proof measuring input. Galvanically isolated up to 6 kV.
For connecting current ALMEMO® V7 measuring instruments: ALMEMO® 500, 710, 809, 202, 204
£460.00 Select options
Digital measuring head for UVE radiation, for measurements in dry surroundings. Sensor with permanently attached cable, 1,5 m, with ALMEMO® D7-connector
Monitoring of UVE-radiation hazardous for human skin.
Mobile measurements in meteorological, medical and biological applications.
For connection to current measuring instruments ALMEMO® V7 : ALMEMO® 500, 710, 809, 202, 204
£1,080.00 ex VAT | £1,296.00 Inc VAT Add to basket
Dynamic measurement of DC signals with 1000 mops (measuring operation per second).
Overvoltage proof measuring input. Galvanically isolated up to 6 kV.
For connecting current ALMEMO® V7 measuring instruments: ALMEMO® 500, 710, 809, 202, 204
£505.00 Select options
Dynamic measurement of DC signals with 1000 mops (measuring operation per second).
Overvoltage proof measuring input. Galvanically isolated up to 6 kV.
For connecting current ALMEMO® V7 measuring instruments: ALMEMO® 500, 710, 809, 202, 204
£415.00 Select options
For displacement transducers and other potentiometric sensors. High-speed measuring at 100 measuring operations per second (mops) and a resolution of 10,000 digits. Only for the latest ALMEMO® V7 measuring instruments, including precision measuring instruments - ALMEMO® 710, ALMEMO® 809 and ALMEMO® 500.
£146.00 ex VAT | £175.20 Inc VAT Add to basket