diff --git a/examples/cuda/vector_add_observers_pmt.py b/examples/cuda/vector_add_observers_pmt.py
index 331be8603..1f6e491d9 100755
--- a/examples/cuda/vector_add_observers_pmt.py
+++ b/examples/cuda/vector_add_observers_pmt.py
@@ -31,10 +31,10 @@ def tune():
     tune_params = dict()
     tune_params["block_size_x"] = [128+64*i for i in range(15)]
 
-    pmtobserver = PMTObserver(["nvml", "rapl"])
+    pmtobserver = PMTObserver([("nvidia", 0), "rapl"])
 
     metrics = OrderedDict()
-    metrics["GPU W"] = lambda p: p["nvml_power"]
+    metrics["GPU W"] = lambda p: p["nvidia_power"]
     metrics["CPU W"] = lambda p: p["rapl_power"]
 
     results, env = tune_kernel("vector_add", kernel_string, size, args, tune_params, observers=[pmtobserver], metrics=metrics, iterations=32)
diff --git a/kernel_tuner/observers/pmt.py b/kernel_tuner/observers/pmt.py
index 6efb1209a..bb1d76bd1 100644
--- a/kernel_tuner/observers/pmt.py
+++ b/kernel_tuner/observers/pmt.py
@@ -38,17 +38,17 @@ def __init__(self, observable=None):
         if type(observable) is dict:
             pass
         elif type(observable) is list:
-            # user specifies a list of platforms as observable
-            observable = dict([(obs, 0) for obs in observable])
+            # user specifies a list of platforms as observable, optionally with an argument
+            observable = dict([obs if isinstance(obs, tuple) else (obs, None) for obs in observable])
         else:
             # User specifices a string (single platform) as observable
             observable = {observable: None}
-        supported = ["arduino", "jetson", "likwid", "nvml", "rapl", "rocm", "xilinx"]
+        supported = ["powersensor2", "powersensor3", "nvidia", "likwid", "rapl", "rocm", "xilinx"]
         for obs in observable.keys():
             if not obs in supported:
                 raise ValueError(f"Observable {obs} not in supported: {supported}")
 
-        self.pms = [pmt.get_pmt(obs[0], obs[1]) for obs in observable.items()]
+        self.pms = [pmt.create(obs[0], obs[1]) for obs in observable.items()]
         self.pm_names = list(observable.keys())
 
         self.begin_states = [None] * len(self.pms)