Danfoss AKS 33 Pressure Transmitters
The Danfoss AKS 33 is the dedicated pressure transmitter for refrigeration and air-conditioning plants. It measures system pressure and converts it into a standard 4–20 mA signal for direct connection to Danfoss controllers (EKE series, system managers) and PLCs.
Fully digitally compensated and developed specially for refrigeration, with a sealed-gauge sensor principle that needs no adjustment. Wetted parts in AISI 316L stainless steel; compatible with all refrigerants including ammonia (R717) and CO2 (R744).
Wenzhou Phonetoo Electromechanical Co., Ltd. is an authorized Danfoss distributor in China. Contact us for availability, pricing and delivery time.
Key features
- 4–20 mA output, polarity-protected 9–32 V DC supply
- Accuracy ±0.3% FS (typ.) / ±0.8% FS (max.), response time < 4 ms
- Fully digitally compensated for refrigeration duty; no adjustment needed
- Robust: shock, vibration and pressure-surge resistant; moisture-sealed for harsh environments
- Wetted parts and housing in AISI 316L stainless steel
- IP65 (plug version) / IP67 (cable version)
- Approvals: UL, CE (EMC), ATEX Zone 2, CRN
- Electrical connection: EN 175301-803 plug or 2 m cable
Measuring ranges (bar gauge)
| Range | Max. working pressure | Compensated temp. |
|---|---|---|
| –1 – 5 | 33 bar | –30 – 40 °C |
| –1 – 6 | 33 bar | –30 – 40 °C |
| –1 – 9 | 33 bar | –30 – 40 °C |
| –1 – 12 | 33 bar | –30 – 40 °C |
| 0 – 16 | 40 bar | –30 – 40 °C |
| –1 – 20 | 40 bar | 0 – 80 °C |
| –1 – 24 | 40 bar | 0 – 80 °C |
| –1 – 34 | 55 bar | 0 – 80 °C |
| –1 – 39 | 60 bar | 0 – 80 °C |
| 0 – 25 | 40 bar | 0 – 80 °C |
Process connections: ¼ NPT, G ⅛ A, ¼ in. flare. Code numbers in the 060G2xxx series — confirm the exact code in your RFQ and we will quote it.
Technical data
| Parameter | AKS 33 |
|---|---|
| Output signal | 4–20 mA |
| Supply voltage | 9–32 V DC, polarity protected |
| Accuracy | ±0.3% FS typ. / ±0.8% FS max. |
| Response time | < 4 ms |
| Media temperature | –40 – 85 °C |
| Burst pressure | min. 300 bar |
| Enclosure | IP65 (plug) / IP67 (cable) |
| Refrigerants | All incl. R717 (ammonia), R744 (CO2), HFC/HCFC, A2L |
Applications
- Suction and discharge pressure measurement in industrial refrigeration
- Condensing / evaporating pressure control loops
- Pump and compressor protection
- Any refrigeration or process control point needing a 4–20 mA pressure signal
Code numbers
Ordering codes for Danfoss AKS 33 pressure transmitters (4 - 20 mA output). Available with EN 175301-803 plug (Pg 9) or with cable, and with 1/4-18 NPT, G 1/4 A (BSP, ISO 228-1) or 7/8-20 UNF flare pressure connections. Confirm the exact type and code number in your RFQ and we will quote it.
| Operating range [bar] | Max. working pressure PB [bar] | Compensated temperature range [°C] | Code no., plug Pg 9, NPT 1/4 in. | Code no., plug Pg 9, G 1/4 A | Code no., plug Pg 9, 7/8 in. flare | Code no., cable, NPT 1/4 in. | Code no., cable, G 1/4 A | Code no., cable, 7/8 in. flare | |
|---|---|---|---|---|---|---|---|---|---|
| LP | -1 - 5 | 33 | -30 - 40 | 060G2112 | 060G2108 | 060G2047 | – | – | – |
| -1 - 6 | 33 | -30 - 40 | 060G2100 | 060G2104 | 060G2048 | – | 060G2120 | – | |
| -1 - 9 | 33 | -30 - 40 | 060G2113 | 060G2111 | 060G2044 | – | – | 060G2062 | |
| -1 - 12 | 33 | -30 - 40 | 060G2101 | 060G2105 | 060G2049 | 060G2117 | – | – | |
| 0 - 16 | 40 | -30 - 40 | 060G2114 | 060G2109 | – | – | – | – | |
| HP | -1 - 34 | 55 | 0 - 80 | 060G2103 | 060G2107 | 060G2051 | 060G2119 | – | 060G2065 |
| -1 - 20 | 40 | 0 - 80 | 060G2102 | 060G2106 | 060G2050 | 060G2118 | – | – | |
| 0 - 25 | 40 | 0 - 80 | 060G2115 | 060G2110 | 060G2045 | – | 060G2127 | 060G2067 |
Connections: NPT = 1/4-18 NPT; G 1/4 A = thread ISO 228/1, BSP; flare = 7/8-20 UNF (also available in US version and with 1/4-27 NPT — contact us for details).