Global industrial control system spare parts manufacturer
Home PLC Others

SIGNATURE SERIES G.R.A.S. 12HF 1-Channel Power Module for Low-noise Systems

Others

SIGNATURE SERIES G.R.A.S. 12HF 1-Channel Power Module for Low-noise Systems

G.R.A.S. 12HF
Condition:
New Original
In stock:
25
Weight
1.86kg
Demension
31.2x29x10.5cm
  • Product details
  • Specifications
  • Recommand
  • Service & Policy
Product category: G.R.A.S. Signature Series Low-noise Power Modules
Product status: New and Original
Tariff code: 90319000
Product description:
SIGNATURE SERIES G.R.A.S. 12HF 1-Channel Power Module for Low-noise Systems
SIGNATURE SERIES G.R.A.S. 12HF is a one-channel power module supplying polarization and preamplifier voltages for low-noise microphone systems. SIGNATURE SERIES G.R.A.S. 12HF supports precise pressure- and free-field acoustic measurements in laboratories and specialized test fixtures.
  • Inquiry stage

    Send me part number & company name & whatsapp & email address

  • Payment stage

    Once price confirmed, I will make ProForma Invoice with bank account for you to pay.

  • Shipment stage

    Order your parts and arrange collection on the same day from our warehouse, either in person or by courier.

 

 

WhatsApp: +86 17359287459 Email: sales15@amikon.cn Add: Siming district, Xiamen, Fujian, China
  About the Product Product Insight

The SIGNATURE SERIES G.R.A.S. 12HF is a single-channel power module designed for low-noise acoustic measurements with matched G.R.A.S. 40HF, 40HH, and 40HT microphone systems. It supplies 200 V microphone polarization and ±15 V preamplifier power, provides a 30 Ω BNC signal output, and allows pressure or free-field response selection. The SIGNATURE SERIES G.R.A.S. 12HF supports precision measurements where the microphone system must resolve extremely low sound-pressure levels.

Frequency response 2 Hz to 20 kHz ±0.2 dB Input channels 1
Output channels 1 External power supply 6 to 20 VDC
Output impedance 30 Ω Battery supply 4 x LR14 C cells
Preamplifier supply ±15 V Fuse 315 mA fast
Polarization voltage 200 V Operating temperature -10 to +50 °C
 
  Field Applications Industry Use Cases
 Low-noise microphone systems: Powering matched G.R.A.S. 40HF, 40HH, and 40HT microphones and preamplifiers for single-channel precision acoustic measurements.
 Anechoic laboratory testing: Supporting pressure- or free-field measurements of very quiet products and components in controlled acoustic environments.
 Headset and ear-simulator measurements: Conditioning low-level microphone signals in G.R.A.S. ear simulators and KEMAR-based headset test arrangements.
 Hearing-protector research: Operating with compatible low-noise microphone systems installed in specialized hearing-protector test fixtures.
 Acoustic R&D and verification: Providing stable polarization, preamplifier power, overload indication, and analog output for low-noise product development and validation.
 
  Our Advantage Brand & Product Expertise
ABB
PM645, PM865, DSQC, AC800M, OCS 07KT97, 07AI, 07DI, etc.
BENTLY
3500 and 3300 system series.
HONEYWELL
DC 2000, TDC 3000, TPS, and security systems.
SCHNEIDER
Quantum 140 series: CPU processors and communication modules.
FOXBORO
FBM203, FBM204, FBM217, FCP240, and FCP270.
EMERSON
DeltaV systems, I/O units, analog AI modules, and analog AO modules.
MOTOROLA
VME 162, MVME 167, MVME 1772, and MVME 177.
YOKOGAWA
CS 3000 system CPU controller modules and analog modules.
EPRO
MMS6210, MMS621, and PR6423/003-031.
 
  Recommended Products Featured Product Selection
 ABB PSM0004 2RCA025059A0001R  ABB DIS0002 2RAA005802A0001H  ABB SL/S50.1 GHQ6050051R0001  ABB CI840A 3BSE041882R1
 ABB DI810 3BSE008508R1  ABB AI880A 3BSE039293R1  ABB AO845A 3BSE045584R1  ABB PM590 1SAP150000R0261
 ABB SB822 3BSE018172R1  ABB DC551 1SAP420500R0001  6ES7153-2BA02-0XB0  6GK5208-0BA00-2AB2
 6ES7214-1AG40-0XB0  6ES7522-1BL01-0AB0  6SL3040-1MA01-0AA0  1768-PA3
 1746-NI4  1756-IF8  1771-OAD  1766-L32BWA/B
 AAI143-S00-S1  SDV144-S33/PRP  ALR121-S00  AAI835-S00
 NFDV551-P10  BMXNOE0100  BMXCPS3020  BMXAMI0810
 BMXP342020H  TM3AQ4  IC200CPUE05-MX  IC695ALG600-FE RX3I
 IC200MDL940E  IC693ALG442-EB  IC200MDL750E  EDS-510A-3GT
 KFD2-CRG2-EX1.D  QJ71E71-B2  CK70AA5KNU3W2100  RM7895B1013
 
  About Our Company Company Capabilities
10+Years of sales experience
70MInventory parts worldwide
 10+ years selling control-system components.
 Fast and efficient application support.
 Direct sourcing with fewer intermediate links.
 Professional sales and customer-service teams.
 Nearly 70 million inventory parts worldwide.
 Competitive pricing for global customers.
 
  Disclaimer
§

Ewolomodule sells new and surplus products and develops channels for purchasing such products. This website has not been approved or recognized by any of the listed manufacturers or trademarks. Ewolomodule is not an authorized distributor, dealer, or representative of the products displayed on this website. All product names, trademarks, brands, and logos used on this website are the property of their respective owners. The description, explanation, or sale of products with these names, trademarks, brands, and logos is for identification purposes only and is not intended to indicate any association with or authorization from any rights holder.

Leave A Message
If you are interested in our products and want to know more details,please leave a message here,we will reply you as soon as we can.

Related products

Contact Us
Address : 32D Guomao Building , No.388 , Hubin south Road , Siming district , Xiamen , Fujian,China
Subscribe

Please Read On, Stay Posted, Subscribe, And We Welcome You To Tell Us What You Think.

Submit

© 2026 Moore Automation Limited All Rights Reserved. network supported

Disclaimer: Ewolomodule sells new and surplus products and develops channels for purchasing such products. This website has not been approved or recognized by any of the listed manufacturers or trademarks.Ewolomodule is not an authorized distributor, dealer, or representative of the products displayed on this website. All product names, trademarks, brands, and logos used on this website are the property of their respective owners. The description, explanation, or sale of products with these names, trademarks, brands, and logos is for identification purposes only and is not intended to indicate any association with or authorization from any rights holder.

Leave A Message

Leave A Message
If you are interested in our products and want to know more details,please leave a message here,we will reply you as soon as we can.
Submit

Home

Products

WhatsApp

contact