เครื่องวัดสนามแม่เหล็กไฟฟ้า Electric Field Meter EFM-113B

 EFM 113B เป็นเครื่องวัดสนามไฟฟ้าขนาดเล็กและพกพาสะดวกพร้อมความไวสูงที่ออกแบบมาสำหรับการวัดสนาม dc และประจุไฟฟ้าสถิตตามหลักการของอิทธิพลของ Fieldmill เอาต์พุตปัจจุบันแบบอะนาล็อก (± 1mA)

The EFM 113B is a small and handy electro field meter with a high sensitivity designed for the measurement of dc fields and static charges according to the fieldmill influence principle. Analog current output  (±1mA).

Specifications:

clamping yoke

Clamping yoke for EFM 113B

Clamping Yoke	Clamping Yoke

With this clamping yoke the electro field meter

EFM 113B can be mounted to any support with

1/4" thread

MK-11 Optional

Voltage Gage Head MK-11

For the measuring the voltage gage head MK11 is mounted on the modulator system of the electro field meter. As the teflon-coated measuring plate is located in 1cm distance to the modulator system the following voltage measuring ranges can be obtained: 

This voltage measuring setup has the following advantages:
 
input capacity: 5pF
input resistance: >1015©

SGG-421 Optional

In combination the SGG 421 and the EFM 113B build a static supervision unit.

The device monitors the sensor's current consumption and alerts (potential-free relay contact) in case the value is too high due to a contamination of the modulator system. Breaks are also detected and alarm is raised.

At the SGG 421 a upper (positive) and lower (negative) limit can be set.The limits can be set over controls or with the optional software.

In case of over- oder under-running of the limits, the corresponding relay switches. Therewith counteractive measures as e.g. air ionizers can be activated or an alarm can be raised.

The devices are mounted on a top hat rail.