ENVI® – Extreme Temperature Passive Probe for Environmental Tests

■ –55 °C to +200 °C (PUHT variant)

■ 500 MHz bandwidth, 400 V / 1250 V peak input voltage range

■ High input impedance: 4.5 MΩ

■ Replaceable spring or rigid tip

■ Universal use with BNC connector

■ Wide range of accessories

The ENVI® passive probe is the world’s first modern probe designed for such an extreme temperature range, operating reliably from –55 °C to +200 °C (PUHT variant) or from –55 °C to +155 °C (PHT variant). With a 400 V / 1250 V peak input range, 10:1 divider, and 500 MHz bandwidth, it delivers precision and durability.

Key Advantages

■ High signal fidelity thanks to replaceable spring tips and a wide range of contacting accessories.

■ Universal connectivity via BNC connector with divider read-out (RO), ensuring compatibility with any oscilloscope with 1 MΩ BNC input, including automatic scaling.

■ Ready for use with full calibration at the end of production (factory calibration certificate available on request).

ENVI® probe at –41 °C.

Where It Excels

■ Automotive
Endurance and functional testing of ECUs, inverters, sensors, and battery management systems exposed to extreme temperature cycles.

■ Power Electronics & Industrial
Safe, accurate measurements on power modules, gate drivers, and converters during demanding thermal stress tests.

■ Research & Education
A reliable tool for R&D labs, universities, and institutes advancing material studies or sensor development, where precision under controlled conditions matters most.

■ Aerospace, Railway & Energy
Built to perform where reliability is critical. ENVI® P(U)HT probes deliver robust results without the need for active circuitry or thermal compensation.

Models & Specifications

The ENVI® probe is available in two variants:

■ PHT (article no. 835-312-Z01) – the original model, updated in 2025 with 500 MHz bandwidth.

■ PUHT (article no. 835-312-U01) – the new 2025 release, designed for operation up to +200 °C.

			Order number	Article	Attn.	B/W	Input Voltage	Input Impedance	Rise Time	Cable Length
£1,575.00 GBP excluding VAT Lead time 3-4 weeks	–55 °C to +155 °C	Datasheet Manual	835-312-Z01	ENVI® 155°C 4.5 MΩ high-temperature probe head	10:1	500 MHz	400V / 1250V peak	4.5 MΩ \|\| 20 pF	600 ps	2 m
£1,900.00 GBP excluding VAT Lead time 3-4 weeks	–55 °C to +200 °C	Datasheet Manual	835-312-U01	ENVI® 200°C 4.5 MΩ high-temperature probe head	10:1	500 MHz	400V / 1250V peak	4.5 MΩ \|\| 20 pF	600 ps	2 m

ENVI® Probe Accessories

Right image: ENVI® probe with 890-321-025 HT-Sprung Hook 5.0 accessory, which is included in the scope of delivery

All ENVI® Probe Accessories

The list below shows several compatible accessories. Please consult the latest ENVI® Probe Datasheet for the full list of available accessories, including clarification on which items are included in the standard scope of delivery and which are optional.

		Order number	Article
£8.00 GBP excluding VAT UK stock — Qty: 0	Datasheet	018-292-007	Adjustment tool PVC/metal
£37.00 GBP excluding VAT UK stock — Qty: 0	Datasheet	018-292-524	HT-Insulating Cap
£76.00 GBP excluding VAT Lead time 8-10 weeks	Datasheet	890-321-025	HT-Sprung Hook 5.0, black
£34.00 GBP excluding VAT Lead time 8-10 weeks	Datasheet	890-400-021	HT-Ground Lead 10 cm to 4 mm Bananaplug
£45.00 GBP excluding VAT Lead time 8-10 weeks	Datasheet	890-400-022	HT-Ground Lead 10 cm to Mini-Hook
£89.00 GBP excluding VAT Lead time 8-10 weeks (limited supply)	Datasheet	890-500-141	HT-IC Clip-M to 0.64 mm Contact Pin
£79.00 GBP excluding VAT Lead time 8-10 weeks (limited supply)	Datasheet	890-500-142	HT-IC Clip-L to 0.64 mm Contact Pin
£79.00 GBP excluding VAT Lead time 8-10 weeks	Datasheet 3D-file	890-700-006	PCB Adapter 5.0-L
£10.00 GBP excluding VAT Lead time 8-10 weeks	Datasheet	891-005-011	Set of 5 Solid Tips 0.8 mm
£19.00 GBP excluding VAT Lead time 8-10 weeks	Datasheet	891-005-803	Set of 5 Spring Tips 0.8 mm
£16.00 GBP excluding VAT Lead time 8-10 weeks	Datasheet	891-291-102	Set 5 ground blades 5.0
£6.00 GBP excluding VAT Lead time 8-10 weeks	Datasheet	930122000	AGF 30
£9.00 GBP excluding VAT UK stock — Qty: 0	Datasheet	018-210-003	BNC Adapter 5.0-L
£8.00 GBP excluding VAT Lead time 8-10 weeks		890-400-015	Ground Lead 15 cm

Extreme Temperature Hands-Free Positioning Solutions

Engineered for reliability from −55 °C to +155 °C, these positioning systems let you configure, lock, and secure your probe setup with confidence—ideal for precise, hands-free measurements inside climate chambers.

		Model number	Article	Width of Span
£1,150.00 GBP excluding VAT Lead time 8-10 weeks	Datasheet	893-500-020	SKID L	300 x 340 mm
£930.00 GBP excluding VAT Lead time 8-10 weeks	Datasheet	893-500-010	SKID M	160 x 240 mm
£690.00 GBP excluding VAT Lead time 8-10 weeks	Datasheet	893-500-000	SKID S	160 x 160 mm
£1,225.00 GBP excluding VAT Lead time 8-10 weeks	Datasheet	893-200-20V	3D measuring-tripod 200mm / M6 V2A, -55°C to +155°C
£1,225.00 GBP excluding VAT Lead time 8-10 weeks	Datasheet	893-200-13V	3D measuring-tripod 130mm / M6 V2A, -55°C to +155°C
£215.00 GBP excluding VAT Lead time 8-10 weeks	Datasheet	893-090-000	UNIHOLD

Extreme Temperature Passive Probes for Climate Chamber Testing

Name: ENVI® PHT 312 Passive Probe, 4.5 MΩ input impedance, -55 °C to +155 °C, 500 MHz, 300 V, 10:1, with readout
Brand: PMK
SKU: 835-312-Z01
Price: 1575.00 GBP
Availability: InStock

2 products

ENVI® PHT 312 Passive Probe, 4.5 MΩ input impedance, -55 °C to +155 °C, 500 MHz, 300 V, 10:1, with readout

835-312-Z01

£1,575.00 GBP

excluding VAT

Lead time 3-4 weeks

ENVI® PUHT 312 Passive Probe, 4.5 MΩ input impedance, -55 °C to +200 °C, 500 MHz, 300 V, 10:1, with readout

835-312-U01

£1,900.00 GBP

excluding VAT

Lead time 3-4 weeks